Use EGL_ANGLE_surface_orientation in Chrome to avoid a blit.

ui/gl/gl_surface_egl.h

Index: ui/gl/gl_surface_egl.h
diff --git a/ui/gl/gl_surface_egl.h b/ui/gl/gl_surface_egl.h
index 7231aa59430110ad7031c94cd42124ce050fdbbd..5cd97dd443fd9519415722407e18524e345c6994 100644
--- a/ui/gl/gl_surface_egl.h
+++ b/ui/gl/gl_surface_egl.h
@@ -98,6 +98,7 @@ class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
                             gl::GLImage* image,
                             const Rect& bounds_rect,
                             const RectF& crop_rect) override;
+  bool FlipsVertically() const override;
 
   // Create a NativeViewGLSurfaceEGL with an externally provided VSyncProvider.
   // Takes ownership of the VSyncProvider.
@@ -123,6 +124,7 @@ class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
   EGLSurface surface_;
   bool supports_post_sub_buffer_;
   bool alpha_;
+  bool flips_vertically_;
 
   scoped_ptr<VSyncProvider> vsync_provider_;