chromium/cc/trees/layer_tree_settings.h

@@ -90,7 +90,7 @@ class CC_EXPORT LayerTreeSettings {
   int max_preraster_distance_in_screen_pixels = 1000;
   viz::ResourceFormat preferred_tile_format;
 
-  bool enable_mask_tiling = true;
+  bool enable_mask_tiling = false;
 
   // If set to true, the compositor may selectively defer image decodes to the
   // Image Decode Service and raster tiles without images until the decode is

chromium/ui/gl/init/gl_initializer_x11.cc

@@ -176,7 +176,6 @@ bool InitializeGLOneOffPlatform() {
       return true;
   }
 }
-#endif
 
 bool InitializeStaticGLBindings(GLImplementation implementation) {
   // Prevent reinitialization with a different implementation. Once the gpu
@@ -209,6 +208,7 @@ bool InitializeStaticGLBindings(GLImplementation implementation) {
 
   return false;
 }
+#endif // !defined(TOOLKIT_QT)
 
 void InitializeDebugGLBindings() {
   InitializeDebugGLBindingsEGL();