Take GL version and extensions correctly into account when binding functions

ui/gl/gl_gl_api_implementation.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_gl_api_implementation.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 128 matching lines @@
 static void GL_BINDING_CALL CustomRenderbufferStorageMultisampleEXT(
     GLenum target, GLsizei samples, GLenum internalformat, GLsizei width,
     GLsizei height) {
   GLenum gl_internal_format = GetInternalFormat(internalformat);
   return g_driver_gl.orig_fn.glRenderbufferStorageMultisampleEXTFn(
       target, samples, gl_internal_format, width, height);
 }
 
 }  // anonymous namespace
 
-void DriverGL::Initialize() {
-  InitializeBindings();
-}
-
-void DriverGL::InitializeExtensions(GLContext* context) {
-  InitializeExtensionBindings(context);
+void DriverGL::InitializeCustomDynamicBindings(GLContext* context) {
+  InitializeDynamicBindings(context);
   orig_fn = fn;
   fn.glTexImage2DFn =
       reinterpret_cast<glTexImage2DProc>(CustomTexImage2D);
   fn.glTexSubImage2DFn =
       reinterpret_cast<glTexSubImage2DProc>(CustomTexSubImage2D);
   fn.glTexStorage2DEXTFn =
       reinterpret_cast<glTexStorage2DEXTProc>(CustomTexStorage2DEXT);
   fn.glRenderbufferStorageEXTFn =
       reinterpret_cast<glRenderbufferStorageEXTProc>(
       CustomRenderbufferStorageEXT);
   fn.glRenderbufferStorageMultisampleEXTFn =
       reinterpret_cast<glRenderbufferStorageMultisampleEXTProc>(
       CustomRenderbufferStorageMultisampleEXT);
 }
 
-void InitializeGLBindingsGL() {
+void InitializeStaticGLBindingsGL() {
   g_current_gl_context_tls = new base::ThreadLocalPointer<GLApi>;
-  g_driver_gl.Initialize();
+  g_driver_gl.InitializeStaticBindings();
   if (!g_real_gl) {
     g_real_gl = new RealGLApi();
     g_trace_gl = new TraceGLApi(g_real_gl);
   }
   g_real_gl->Initialize(&g_driver_gl);
   g_gl = g_real_gl;
   if (CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableGPUServiceTracing)) {
     g_gl = g_trace_gl;
   }
   SetGLToRealGLApi();
 }
 
 GLApi* GetCurrentGLApi() {
   return g_current_gl_context_tls->Get();
 }
 
 void SetGLApi(GLApi* api) {
   g_current_gl_context_tls->Set(api);
 }
 
 void SetGLToRealGLApi() {
   SetGLApi(g_gl);
 }
 
-void InitializeGLExtensionBindingsGL(GLContext* context) {
-  g_driver_gl.InitializeExtensions(context);
+void InitializeDynamicGLBindingsGL(GLContext* context) {
+  g_driver_gl.InitializeCustomDynamicBindings(context);
 }
 
 void InitializeDebugGLBindingsGL() {
   g_driver_gl.InitializeDebugBindings();
 }
 
 void ClearGLBindingsGL() {
   if (g_real_gl) {
     delete g_real_gl;
     g_real_gl = NULL;
@@ skipping 125 matching lines @@
 const GLubyte* VirtualGLApi::glGetStringFn(GLenum name) {
   switch (name) {
     case GL_EXTENSIONS:
       return reinterpret_cast<const GLubyte*>(extensions_.c_str());
     default:
       return driver_->fn.glGetStringFn(name);
   }
 }
 
 }  // namespace gfx