--- chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/shaping/harfbuzz_face.cc.old	2018-10-19 22:51:37.078132988 -0500
+++ chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/shaping/harfbuzz_face.cc	2018-10-19 22:54:25.102135682 -0500
@@ -136,13 +136,13 @@
 }
 
 static void HarfBuzzGetGlyphHorizontalAdvances(hb_font_t* font,
-                                               void* font_data,
-                                               unsigned count,
-                                               hb_codepoint_t* first_glyph,
-                                               unsigned int glyph_stride,
-                                               hb_position_t* first_advance,
-                                               unsigned int advance_stride,
-                                               void* user_data) {
+					       void* font_data,
+                                               unsigned int count,
+                                               const hb_codepoint_t *first_glyph,
+                                               unsigned glyph_stride,
+                                               hb_position_t *first_advance,
+                                               unsigned advance_stride,
+                                               void *user_data) {
   HarfBuzzFontData* hb_font_data =
       reinterpret_cast<HarfBuzzFontData*>(font_data);
   SkiaTextMetrics(&hb_font_data->paint_)
--- chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/skia/skia_text_metrics.cc.old	2018-10-19 23:07:39.958148426 -0500
+++ chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/skia/skia_text_metrics.cc	2018-10-19 23:08:02.626148790 -0500
@@ -38,8 +38,8 @@
   *width = SkiaScalarToHarfBuzzPosition(sk_width);
 }
 
-void SkiaTextMetrics::GetGlyphWidthForHarfBuzz(unsigned count,
-                                               hb_codepoint_t* glyphs,
+void SkiaTextMetrics::GetGlyphWidthForHarfBuzz(unsigned int count,
+                                               const hb_codepoint_t* glyphs,
                                                unsigned glyph_stride,
                                                hb_position_t* advances,
                                                unsigned advance_stride) {
--- chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/skia/skia_text_metrics.h.old	2018-10-19 23:10:14.242150900 -0500
+++ chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/skia/skia_text_metrics.h	2018-10-19 23:10:37.918151280 -0500
@@ -18,8 +18,8 @@
   SkiaTextMetrics(const SkPaint*);
 
   void GetGlyphWidthForHarfBuzz(hb_codepoint_t, hb_position_t* width);
-  void GetGlyphWidthForHarfBuzz(unsigned count,
-                                hb_codepoint_t* first_glyph,
+  void GetGlyphWidthForHarfBuzz(unsigned int count,
+                                const hb_codepoint_t* first_glyph,
                                 unsigned glyph_stride,
                                 hb_position_t* first_advance,
                                 unsigned advance_stride);
--- chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/skia/skia_text_metrics.cc.old	2018-10-20 12:51:35.706500856 -0500
+++ chromium-70.0.3538.67/third_party/blink/renderer/platform/fonts/skia/skia_text_metrics.cc	2018-10-20 14:47:09.544223999 -0500
@@ -18,6 +18,11 @@
   return reinterpret_cast<T*>(reinterpret_cast<uint8_t*>(p) + byte_size);
 }
 
+template <class T>
+T* advance_by_byte_size_const(T* p, unsigned byte_size) {
+  return reinterpret_cast<T*>(reinterpret_cast<const uint8_t*>(p) + byte_size);
+}
+
 }  // namespace
 
 SkiaTextMetrics::SkiaTextMetrics(const SkPaint* paint) : paint_(paint) {
@@ -48,7 +53,7 @@
   // array that copy them to a regular array.
   Vector<Glyph, 256> glyph_array(count);
   for (unsigned i = 0; i < count;
-       i++, glyphs = advance_by_byte_size(glyphs, glyph_stride)) {
+       i++, glyphs = advance_by_byte_size_const(glyphs, glyph_stride)) {
     glyph_array[i] = *glyphs;
   }
   Vector<SkScalar, 256> sk_width_array(count);