Gentoo bugs:
- https://bugs.gentoo.org/889724
- https://bugs.gentoo.org/895196
- https://bugs.gentoo.org/898902
- https://bugs.gentoo.org/898634 (bundled abseil)

Based on the following from Fedora:
- https://src.fedoraproject.org/rpms/qt5-qtwebengine/c/14bbdcc0567223a4c96421ab2dfe2a668831ec98?branch=rawhide
- https://src.fedoraproject.org/rpms/qt5-qtwebengine/c/9a37c86a90d1d3c0684aa1428657fc7ed22390ac?branch=rawhide
- https://src.fedoraproject.org/rpms/qt5-qtwebengine/c/5dc49e01024ab2adae3705d14a9be76d706b7e52?branch=rawhide
- Whole thing: https://src.fedoraproject.org/rpms/qt5-qtwebengine/raw/rawhide/f/qtwebengine-fix-build.patch
--- a/src/3rdparty/chromium/base/debug/profiler.h
+++ b/src/3rdparty/chromium/base/debug/profiler.h
@@ -5,6 +5,7 @@
 #ifndef BASE_DEBUG_PROFILER_H_
 #define BASE_DEBUG_PROFILER_H_
 
+#include <cstdint>
 #include <stddef.h>
 
 #include <string>
--- a/src/3rdparty/chromium/base/debug/stack_trace.h
+++ b/src/3rdparty/chromium/base/debug/stack_trace.h
@@ -7,6 +7,7 @@
 
 #include <stddef.h>
 
+#include <cstdint>
 #include <iosfwd>
 #include <string>
 
--- a/src/3rdparty/chromium/cc/trees/target_property.cc
+++ b/src/3rdparty/chromium/cc/trees/target_property.cc
@@ -4,6 +4,8 @@
 
 #include "cc/trees/target_property.h"
 
+#include <cstdint>
+
 namespace cc {
 
 static_assert(TargetProperty::LAST_TARGET_PROPERTY < kMaxTargetPropertyIndex,
--- a/src/3rdparty/chromium/content/public/browser/browsing_data_remover_delegate.h
+++ b/src/3rdparty/chromium/content/public/browser/browsing_data_remover_delegate.h
@@ -5,6 +5,7 @@
 #ifndef CONTENT_PUBLIC_BROWSER_BROWSING_DATA_REMOVER_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_BROWSING_DATA_REMOVER_DELEGATE_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 #include "base/callback_forward.h"
--- a/src/3rdparty/chromium/device/base/synchronization/one_writer_seqlock.cc
+++ b/src/3rdparty/chromium/device/base/synchronization/one_writer_seqlock.cc
@@ -4,6 +4,8 @@
 
 #include "device/base/synchronization/one_writer_seqlock.h"
 
+#include <cstdint>
+
 namespace device {
 
 OneWriterSeqLock::OneWriterSeqLock() : sequence_(0) {}
--- a/src/3rdparty/chromium/device/bluetooth/public/cpp/bluetooth_uuid.h
+++ b/src/3rdparty/chromium/device/bluetooth/public/cpp/bluetooth_uuid.h
@@ -5,6 +5,7 @@
 #ifndef DEVICE_BLUETOOTH_PUBLIC_CPP_BLUETOOTH_UUID_H_
 #define DEVICE_BLUETOOTH_PUBLIC_CPP_BLUETOOTH_UUID_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
--- a/src/3rdparty/chromium/extensions/browser/api/audio/audio_device_id_calculator.h
+++ b/src/3rdparty/chromium/extensions/browser/api/audio/audio_device_id_calculator.h
@@ -5,6 +5,7 @@
 #ifndef EXTENSIONS_BROWSER_API_AUDIO_AUDIO_DEVICE_ID_CALCULATOR_H_
 #define EXTENSIONS_BROWSER_API_AUDIO_AUDIO_DEVICE_ID_CALCULATOR_H_
 
+#include <cstdint>
 #include <map>
 #include <string>
 
--- a/src/3rdparty/chromium/extensions/common/constants.h
+++ b/src/3rdparty/chromium/extensions/common/constants.h
@@ -11,6 +11,8 @@
 #include "components/version_info/channel.h"
 #include "ui/base/layout.h"
 
+#include <cstdint>
+
 namespace extensions {
 
 // Scheme we serve extension content from.
--- a/src/3rdparty/chromium/gpu/command_buffer/common/webgpu_cmd_enums.h
+++ b/src/3rdparty/chromium/gpu/command_buffer/common/webgpu_cmd_enums.h
@@ -5,6 +5,8 @@
 #ifndef GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_ENUMS_H_
 #define GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_ENUMS_H_
 
+#include <cstdint>
+
 namespace gpu {
 namespace webgpu {
 
--- a/src/3rdparty/chromium/gpu/command_buffer/common/webgpu_cmd_format.h
+++ b/src/3rdparty/chromium/gpu/command_buffer/common/webgpu_cmd_format.h
@@ -5,6 +5,7 @@
 #ifndef GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_FORMAT_H_
 #define GPU_COMMAND_BUFFER_COMMON_WEBGPU_CMD_FORMAT_H_
 
+#include <cstdint>
 #include <string.h>
 
 #include "gpu/command_buffer/common/gl2_types.h"
--- a/src/3rdparty/chromium/gpu/command_buffer/service/shared_context_state.h
+++ b/src/3rdparty/chromium/gpu/command_buffer/service/shared_context_state.h
@@ -5,6 +5,7 @@
 #ifndef GPU_COMMAND_BUFFER_SERVICE_SHARED_CONTEXT_STATE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_SHARED_CONTEXT_STATE_H_
 
+#include <cstdint>
 #include <memory>
 #include <vector>
 
--- a/src/3rdparty/chromium/gpu/config/device_perf_info.h
+++ b/src/3rdparty/chromium/gpu/config/device_perf_info.h
@@ -5,6 +5,7 @@
 #ifndef GPU_CONFIG_DEVICE_PERF_INFO_H_
 #define GPU_CONFIG_DEVICE_PERF_INFO_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
--- a/src/3rdparty/chromium/gpu/config/gpu_feature_info.h
+++ b/src/3rdparty/chromium/gpu/config/gpu_feature_info.h
@@ -5,6 +5,7 @@
 #ifndef GPU_CONFIG_GPU_FEATURE_INFO_H_
 #define GPU_CONFIG_GPU_FEATURE_INFO_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
--- a/src/3rdparty/chromium/gpu/config/gpu_preferences.h
+++ b/src/3rdparty/chromium/gpu/config/gpu_preferences.h
@@ -5,6 +5,7 @@
 #ifndef GPU_CONFIG_GPU_PREFERENCES_H_
 #define GPU_CONFIG_GPU_PREFERENCES_H_
 
+#include <cstdint>
 #include <stddef.h>
 #include <string>
 #include <vector>
--- a/src/3rdparty/chromium/gpu/config/gpu_util.h
+++ b/src/3rdparty/chromium/gpu/config/gpu_util.h
@@ -5,6 +5,8 @@
 #ifndef GPU_CONFIG_GPU_UTIL_H_
 #define GPU_CONFIG_GPU_UTIL_H_
 
+#include <cstdint>
+
 #include "build/build_config.h"
 #include "gpu/config/gpu_feature_info.h"
 #include "gpu/gpu_export.h"
--- a/src/3rdparty/chromium/net/base/parse_number.h
+++ b/src/3rdparty/chromium/net/base/parse_number.h
@@ -9,6 +9,8 @@
 #include "base/strings/string_piece.h"
 #include "net/base/net_export.h"
 
+#include <cstdint>
+
 // This file contains utility functions for parsing numbers, in the context of
 // network protocols.
 //
--- a/src/3rdparty/chromium/net/cookies/cookie_inclusion_status.h
+++ b/src/3rdparty/chromium/net/cookies/cookie_inclusion_status.h
@@ -5,6 +5,7 @@
 #ifndef NET_COOKIES_COOKIE_INCLUSION_STATUS_H_
 #define NET_COOKIES_COOKIE_INCLUSION_STATUS_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
--- a/src/3rdparty/chromium/pdf/document_attachment_info.h
+++ b/src/3rdparty/chromium/pdf/document_attachment_info.h
@@ -7,6 +7,8 @@
 
 #include "base/strings/string16.h"
 
+#include <cstdint>
+
 namespace chrome_pdf {
 
 struct DocumentAttachmentInfo {
--- a/src/3rdparty/chromium/ppapi/utility/completion_callback_factory_thread_traits.h
+++ b/src/3rdparty/chromium/ppapi/utility/completion_callback_factory_thread_traits.h
@@ -38,6 +38,10 @@ namespace pp {
 /// As a further optimization, we can add support for this later.
 class ThreadSafeThreadTraits {
  public:
+
+  typedef pp::Lock Lock;
+  typedef pp::AutoLock AutoLock;
+
   class RefCount {
    public:
     /// Default constructor. In debug mode, this checks that the object is being
@@ -67,8 +71,6 @@ class ThreadSafeThreadTraits {
     int32_t ref_;
   };
 
-  typedef pp::Lock Lock;
-  typedef pp::AutoLock AutoLock;
 };
 
 /// The non-thread-safe version of thread traits. Using this class as the
--- a/src/3rdparty/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.h
+++ b/src/3rdparty/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.h
@@ -19,6 +19,7 @@
 #include <limits.h>
 
 #include <cstddef>
+#include <cstdint>
 #include <cstring>
 #include <ostream>
 
--- a/src/3rdparty/chromium/third_party/angle/include/GLSLANG/ShaderVars.h
+++ b/src/3rdparty/chromium/third_party/angle/include/GLSLANG/ShaderVars.h
@@ -12,6 +12,7 @@
 
 #include <algorithm>
 #include <array>
+#include <cstdint>
 #include <string>
 #include <vector>
 
--- a/src/3rdparty/chromium/third_party/angle/src/common/angleutils.h
+++ b/src/3rdparty/chromium/third_party/angle/src/common/angleutils.h
@@ -15,6 +15,7 @@
 #    include "absl/container/flat_hash_map.h"
 #endif  // defined(ANGLE_USE_ABSEIL)
 
+#include <cstdint>
 #include <climits>
 #include <cstdarg>
 #include <cstddef>
--- a/src/3rdparty/chromium/third_party/breakpad/breakpad/src/client/linux/handler/minidump_descriptor.h
+++ b/src/3rdparty/chromium/third_party/breakpad/breakpad/src/client/linux/handler/minidump_descriptor.h
@@ -33,6 +33,7 @@
 #include <assert.h>
 #include <sys/types.h>
 
+#include <cstdint>
 #include <string>
 
 #include "client/linux/handler/microdump_extra_info.h"
--- a/src/3rdparty/chromium/third_party/libgav1/src/src/utils/threadpool.cc
+++ b/src/3rdparty/chromium/third_party/libgav1/src/src/utils/threadpool.cc
@@ -30,6 +30,7 @@
 #include <cstddef>
 #include <cstdint>
 #include <cstring>
+#include <cstdio>
 #include <new>
 #include <utility>
 
--- a/src/3rdparty/chromium/third_party/pdfium/constants/annotation_flags.h
+++ b/src/3rdparty/chromium/third_party/pdfium/constants/annotation_flags.h
@@ -5,6 +5,8 @@
 #ifndef CONSTANTS_ANNOTATION_FLAGS_H_
 #define CONSTANTS_ANNOTATION_FLAGS_H_
 
+#include <cstdint>
+
 namespace pdfium {
 namespace annotation_flags {
 
--- a/src/3rdparty/chromium/third_party/perfetto/include/perfetto/ext/base/uuid.h
+++ b/src/3rdparty/chromium/third_party/perfetto/include/perfetto/ext/base/uuid.h
@@ -18,6 +18,7 @@
 #define INCLUDE_PERFETTO_EXT_BASE_UUID_H_
 
 #include <array>
+#include <cstdint>
 #include <string>
 
 #include "perfetto/ext/base/optional.h"
--- a/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/importers/proto/proto_importer_module.h
+++ b/src/3rdparty/chromium/third_party/perfetto/src/trace_processor/importers/proto/proto_importer_module.h
@@ -21,6 +21,8 @@
 #include "perfetto/trace_processor/status.h"
 #include "src/trace_processor/trace_blob_view.h"
 
+#include <cstdint>
+
 namespace perfetto {
 
 namespace protos {
--- a/src/3rdparty/chromium/third_party/skia/src/utils/SkParseColor.cpp
+++ b/src/3rdparty/chromium/third_party/skia/src/utils/SkParseColor.cpp
@@ -9,6 +9,9 @@
 #include "include/utils/SkParse.h"
 
 #include <algorithm> // std::lower_bound
+#include <algorithm>
+#include <cstring>
+#include <iterator>
 
 static constexpr const char* gColorNames[] = {
     "aliceblue",
--- a/src/3rdparty/chromium/third_party/webrtc/call/rtp_demuxer.h
+++ b/src/3rdparty/chromium/third_party/webrtc/call/rtp_demuxer.h
@@ -11,6 +11,7 @@
 #ifndef CALL_RTP_DEMUXER_H_
 #define CALL_RTP_DEMUXER_H_
 
+#include <cstdint>
 #include <map>
 #include <set>
 #include <string>
--- a/src/3rdparty/chromium/third_party/webrtc/rtc_base/third_party/base64/base64.h
+++ b/src/3rdparty/chromium/third_party/webrtc/rtc_base/third_party/base64/base64.h
@@ -12,6 +12,7 @@
 #ifndef RTC_BASE_THIRD_PARTY_BASE64_BASE64_H_
 #define RTC_BASE_THIRD_PARTY_BASE64_BASE64_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
--- a/src/3rdparty/chromium/third_party/xcbproto/src/src/present.xml
+++ b/src/3rdparty/chromium/third_party/xcbproto/src/src/present.xml
@@ -89,7 +89,7 @@ OF THIS SOFTWARE.
     </reply>
   </request>
 
-  <request name="Pixmap" opcode="1">
+  <request name="PresentPixmap" opcode="1">
     <required_start_align align="8" />
     <field type="WINDOW" name="window" />
     <field type="PIXMAP" name="pixmap" />
--- a/src/3rdparty/chromium/ui/events/gesture_event_details.h
+++ b/src/3rdparty/chromium/ui/events/gesture_event_details.h
@@ -5,6 +5,7 @@
 #ifndef UI_EVENTS_GESTURE_DETECTION_GESTURE_EVENT_DETAILS_H_
 #define UI_EVENTS_GESTURE_DETECTION_GESTURE_EVENT_DETAILS_H_
 
+#include <cstdint>
 #include <string.h>
 
 #include "base/check_op.h"
--- a/src/3rdparty/chromium/ui/events/types/scroll_types.h
+++ b/src/3rdparty/chromium/ui/events/types/scroll_types.h
@@ -5,6 +5,8 @@
 #ifndef UI_EVENTS_TYPES_SCROLL_TYPES_H_
 #define UI_EVENTS_TYPES_SCROLL_TYPES_H_
 
+#include <cstdint>
+
 namespace ui {
 
 enum class ScrollGranularity : uint8_t {
--- a/src/3rdparty/chromium/ui/gl/gl_surface_glx.cc
+++ b/src/3rdparty/chromium/ui/gl/gl_surface_glx.cc
@@ -4,6 +4,7 @@
 
 #include "ui/gl/gl_surface_glx.h"
 
+#include <cstdint>
 #include <utility>
 
 #include "base/bind.h"
--- a/src/3rdparty/chromium/ui/gl/gl_surface_glx.h
+++ b/src/3rdparty/chromium/ui/gl/gl_surface_glx.h
@@ -5,6 +5,7 @@
 #ifndef UI_GL_GL_SURFACE_GLX_H_
 #define UI_GL_GL_SURFACE_GLX_H_
 
+#include <cstdint>
 #include <stdint.h>
 
 #include <memory>
--- a/src/3rdparty/chromium/v8/src/base/logging.h
+++ b/src/3rdparty/chromium/v8/src/base/logging.h
@@ -5,6 +5,7 @@
 #ifndef V8_BASE_LOGGING_H_
 #define V8_BASE_LOGGING_H_
 
+#include <cstdint>
 #include <cstring>
 #include <sstream>
 #include <string>
--- a/src/3rdparty/chromium/v8/src/base/macros.h
+++ b/src/3rdparty/chromium/v8/src/base/macros.h
@@ -5,6 +5,7 @@
 #ifndef V8_BASE_MACROS_H_
 #define V8_BASE_MACROS_H_
 
+#include <cstdint>
 #include <limits>
 #include <type_traits>
 
--- a/src/3rdparty/chromium/v8/src/inspector/v8-string-conversions.h
+++ b/src/3rdparty/chromium/v8/src/inspector/v8-string-conversions.h
@@ -5,6 +5,7 @@
 #ifndef V8_INSPECTOR_V8_STRING_CONVERSIONS_H_
 #define V8_INSPECTOR_V8_STRING_CONVERSIONS_H_
 
+#include <cstdint>
 #include <string>
 
 // Conversion routines between UT8 and UTF16, used by string-16.{h,cc}. You may
--- a/src/core/browsing_data_remover_delegate_qt.h
+++ b/src/core/browsing_data_remover_delegate_qt.h
@@ -42,6 +42,8 @@
 
 #include "content/public/browser/browsing_data_remover_delegate.h"
 
+#include <cstdint>
+
 namespace QtWebEngineCore {
 
 class BrowsingDataRemoverDelegateQt : public content::BrowsingDataRemoverDelegate {