Add TRACE calls for all gpu driver calls

ui/gl/gl_gl_api_implementation.h

 // 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.
 
 #ifndef UI_GL_GL_API_IMPLEMENTATION_H_
 #define UI_GL_GL_API_IMPLEMENTATION_H_
 
 #include "base/compiler_specific.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_export.h"
@@ skipping 31 matching lines @@
 };
 
 // Implemenents the GL API by calling directly into the driver.
 class GL_EXPORT RealGLApi : public GLApiBase {
  public:
   RealGLApi();
   virtual ~RealGLApi();
   void Initialize(DriverGL* driver);
 };
 
+// Inserts a TRACE for every GL call.
+class GL_EXPORT TraceGLApi : public GLApi {
+ public:
+  TraceGLApi(GLApi* gl_api) : gl_api_(gl_api) { }
+  virtual ~TraceGLApi();
+
+  // Include the auto-generated part of this class. We split this because
+  // it means we can easily edit the non-auto generated parts right here in
+  // this file instead of having to edit some template or the code generator.
+  #include "gl_bindings_api_autogen_gl.h"
+
+ private:
+  GLApi* gl_api_;
+};
+
 // Implementents the GL API using co-operative state restoring.
 // Assumes there is only one real GL context and that multiple virtual contexts
 // are implemented above it. Restores the needed state from the current context.
 class GL_EXPORT VirtualGLApi : public GLApiBase {
  public:
   VirtualGLApi();
   virtual ~VirtualGLApi();
   void Initialize(DriverGL* driver, GLContext* real_context);
 
   // Sets the current virutal context.
@@ skipping 11 matching lines @@
   // The current virtual context.
   GLContext* current_context_;
 
   // The supported extensions being advertised for this virtual context.
   std::string extensions_;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_API_IMPLEMENTATION_H_