MacViews: views_examples_with_content_exe working!

ui/gl/gl_context_cgl.cc

 // Copyright (c) 2012 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 "ui/gl/gl_context_cgl.h"
 
 #include <OpenGL/CGLRenderers.h>
 #include <OpenGL/CGLTypes.h>
 #include <vector>
 
@@ skipping 98 matching lines @@
       format,
       share_context ?
           static_cast<CGLContextObj>(share_context->GetHandle()) : NULL,
       reinterpret_cast<CGLContextObj*>(&context_));
   if (res != kCGLNoError) {
     LOG(ERROR) << "Error creating context.";
     Destroy();
     return false;
   }
 
+  // For transparent windows.
+  GLint opaque = 0;
+  CGLSetParameter(
+      static_cast<CGLContextObj>(context_), kCGLCPSurfaceOpacity, &opaque);
+
   gpu_preference_ = gpu_preference;
   return true;
 }
 
 void GLContextCGL::Destroy() {
   if (discrete_pixelformat_) {
     // Delay releasing the pixel format for 10 seconds to reduce the number of
     // unnecessary GPU switches.
     base::MessageLoop::current()->PostDelayedTask(
         FROM_HERE,
@@ skipping 167 matching lines @@
 
 GLContextCGL::~GLContextCGL() {
   Destroy();
 }
 
 GpuPreference GLContextCGL::GetGpuPreference() {
   return gpu_preference_;
 }
 
 }  // namespace gfx