Backport https://src.chromium.org/viewvc/blink?diff_format=u&view=revision&revision=195908
to chromium-44's WebKit as this is used by components/plugins/renderer/webview_plugin.cc.

Also backport https://src.chromium.org/viewvc/blink?revision=195691&view=revision, same
type of problem.

-gmt

--- a/third_party/WebKit/Source/web/WebPluginContainerImpl.cpp	2015/05/26 12:35:04	195907
+++ b/third_party/WebKit/Source/web/WebPluginContainerImpl.cpp	2015/05/26 13:12:12	195908
@@ -413,6 +413,12 @@
     invalidateRect(rect);
 }
 
+void WebPluginContainerImpl::setNeedsLayout()
+{
+    if (m_element->layoutObject())
+        m_element->layoutObject()->setNeedsLayout("Plugin needs layout");
+}
+
 void WebPluginContainerImpl::reportGeometry()
 {
     // We cannot compute geometry without a parent or layoutObject.
--- a/third_party/WebKit/Source/web/WebPluginContainerImpl.h	2015/05/26 12:35:04	195907
+++ b/third_party/WebKit/Source/web/WebPluginContainerImpl.h	2015/05/26 13:12:12	195908
@@ -102,6 +102,7 @@
     virtual void invalidate() override;
     virtual void invalidateRect(const WebRect&) override;
     virtual void scrollRect(const WebRect&) override;
+    virtual void setNeedsLayout() override;
     virtual void reportGeometry() override;
     virtual void allowScriptObjects() override;
     virtual void clearScriptObjects() override;
--- a/third_party/WebKit/public/web/WebPluginContainer.h	2015/05/26 12:35:04	195907
+++ b/third_party/WebKit/public/web/WebPluginContainer.h	2015/05/26 13:12:12	195908
@@ -63,6 +63,12 @@
     virtual void invalidateRect(const WebRect&) = 0;
     virtual void scrollRect(const WebRect&) = 0;
 
+    // Causes the container to be marked as needing layout, which in turn will cause
+    // layoutIfNeeded() to be called on any contained WebPlugin during the container's
+    // web view's lifecycle update, and in particular before calling paint() on the
+    // WebPlugin.
+    virtual void setNeedsLayout() = 0;
+
     // Causes the container to report its current geometry via
     // WebPlugin::updateGeometry.
     virtual void reportGeometry() = 0;
--- a/third_party/WebKit/Source/web/WebRuntimeFeatures.cpp	2015/05/21 12:40:33	195690
+++ b/third_party/WebKit/Source/web/WebRuntimeFeatures.cpp	2015/05/21 15:06:45	195691
@@ -193,6 +193,11 @@ void WebRuntimeFeatures::enablePagePopup
     RuntimeEnabledFeatures::setPagePopupEnabled(enable);
 }
 
+void WebRuntimeFeatures::enablePermissionsAPI(bool enable)
+{
+    RuntimeEnabledFeatures::setPermissionsEnabled(enable);
+}
+
 void WebRuntimeFeatures::enableRequestAutocomplete(bool enable)
 {
     RuntimeEnabledFeatures::setRequestAutocompleteEnabled(enable);
--- a/third_party/WebKit/public/web/WebRuntimeFeatures.h	2015/05/21 12:40:33	195690
+++ b/third_party/WebKit/public/web/WebRuntimeFeatures.h	2015/05/21 15:06:45	195691
@@ -101,6 +101,8 @@ public:
 
     BLINK_EXPORT static void enablePagePopup(bool);
 
+    BLINK_EXPORT static void enablePermissionsAPI(bool);
+
     BLINK_EXPORT static void enableRequestAutocomplete(bool);
 
     BLINK_EXPORT static void enableScreenOrientation(bool);