Get real GPU memory values on NV+Linux and OS X

ui/gl/gl_context_cgl.h

Index: ui/gl/gl_context_cgl.h
diff --git a/ui/gl/gl_context_cgl.h b/ui/gl/gl_context_cgl.h
index 1e41b520eea3d93124fbe633dafb95fbdce3582e..49bc346bfc1d20835a9fcd8ca8dea6a641a3a9a9 100644
--- a/ui/gl/gl_context_cgl.h
+++ b/ui/gl/gl_context_cgl.h
@@ -7,6 +7,7 @@
 
 #include <OpenGL/CGLTypes.h>
 
+#include "base/memory/scoped_generic_obj.h"
 #include "ui/gl/gl_context.h"
 
 namespace gfx {
@@ -27,6 +28,7 @@ class GLContextCGL : public GLContext {
   virtual bool IsCurrent(GLSurface* surface) OVERRIDE;
   virtual void* GetHandle() OVERRIDE;
   virtual void SetSwapInterval(int interval) OVERRIDE;
+  virtual bool GetTotalGpuMemory(size_t* bytes) OVERRIDE;
 
  protected:
   virtual ~GLContextCGL();
@@ -49,6 +51,14 @@ class GLContextCGL : public GLContext {
   DISALLOW_COPY_AND_ASSIGN(GLContextCGL);
 };
 
+class ScopedCGLDestroyRendererInfo {
+ public:
+  void operator()(CGLRendererInfoObj x) const;
+};
+
+typedef ScopedGenericObj<CGLRendererInfoObj, ScopedCGLDestroyRendererInfo>
+    ScopedCGLRendererInfoObj;
+
 }  // namespace gfx
 
 #endif  // UI_GL_GL_CONTEXT_CGL_H_