Use EGL_ANGLE_surface_orientation in Chrome to avoid a blit.

content/browser/compositor/gpu_browser_compositor_output_surface.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/compositor/gpu_browser_compositor_output_surface.h"
 
 #include "cc/output/compositor_frame.h"
 #include "cc/output/output_surface_client.h"
 #include "content/browser/compositor/browser_compositor_overlay_candidate_validator.h"
 #include "content/browser/compositor/reflector_impl.h"
@@ skipping 40 matching lines @@
 
 bool GpuBrowserCompositorOutputSurface::BindToClient(
     cc::OutputSurfaceClient* client) {
   if (!BrowserCompositorOutputSurface::BindToClient(client))
     return false;
 
   GetCommandBufferProxy()->SetSwapBuffersCompletionCallback(
       swap_buffers_completion_callback_.callback());
   GetCommandBufferProxy()->SetUpdateVSyncParametersCallback(
       update_vsync_parameters_callback_.callback());
+  if (capabilities_.uses_default_gl_framebuffer) {
+    capabilities_.flipped_output_surface =
+        context_provider()->ContextCapabilities().gpu.flips_vertically;
+  }
   return true;
 }
 
 void GpuBrowserCompositorOutputSurface::OnReflectorChanged() {
   if (!reflector_) {
     reflector_texture_.reset();
   } else {
     reflector_texture_.reset(new ReflectorTexture(context_provider()));
     reflector_->OnSourceTextureMailboxUpdated(reflector_texture_->mailbox());
   }
@@ skipping 76 matching lines @@
 
 bool GpuBrowserCompositorOutputSurface::SurfaceIsSuspendForRecycle() const {
 #if defined(OS_MACOSX)
   return should_show_frames_state_ == SHOULD_NOT_SHOW_FRAMES_SUSPENDED;
 #else
   return false;
 #endif
 }
 
 }  // namespace content