Use EGL_ANGLE_surface_orientation in Chrome to avoid a blit.

ui/gl/gl_surface.cc

Index: ui/gl/gl_surface.cc
diff --git a/ui/gl/gl_surface.cc b/ui/gl/gl_surface.cc
index c5346908b17865a010dac0677b15713651d72450..224953658cc8bf3e13484a96fa444cc55283054d 100644
--- a/ui/gl/gl_surface.cc
+++ b/ui/gl/gl_surface.cc
@@ -219,6 +219,10 @@ bool GLSurface::IsSurfaceless() const {
   return false;
 }
 
+bool GLSurface::FlipsVertically() const {
+  return false;
+}
+
 GLSurface* GLSurface::GetCurrent() {
   return current_surface_.Pointer()->Get();
 }
@@ -379,6 +383,10 @@ bool GLSurfaceAdapter::IsSurfaceless() const {
   return surface_->IsSurfaceless();
 }
 
+bool GLSurfaceAdapter::FlipsVertically() const {
+  return surface_->FlipsVertically();
+}
+
 GLSurfaceAdapter::~GLSurfaceAdapter() {}
 
 }  // namespace gfx