Respect the disabled extension list during binding initialization.

ui/gl/gl_wgl_api_implementation.cc

Index: ui/gl/gl_wgl_api_implementation.cc
diff --git a/ui/gl/gl_wgl_api_implementation.cc b/ui/gl/gl_wgl_api_implementation.cc
index 3b92d980b352903c6120792af7dc1c3288636008..9b0e0dbb948c1ab7a8e758275df6ad1582ee6137 100644
--- a/ui/gl/gl_wgl_api_implementation.cc
+++ b/ui/gl/gl_wgl_api_implementation.cc
@@ -16,6 +16,7 @@ void InitializeStaticGLBindingsWGL() {
   }
   g_real_wgl->Initialize(&g_driver_wgl);
   g_current_wgl_context = g_real_wgl;
+  g_driver_wgl.InitializeExtensionBindings(g_real_wgl->GetEnabledExtensions());
 }
 
 void InitializeDebugGLBindingsWGL() {
@@ -58,6 +59,19 @@ void RealWGLApi::Initialize(DriverWGL* driver) {
   InitializeBase(driver);
 }
 
+std::set<std::string> RealWGLApi::GetEnabledExtensions() const {
+  std::set<std::string> enabled_extensions;
+
+  std::vector<std::string> platform_extensions_vec;
+  std::string platform_ext = DriverWGL::GetPlatformExtensions();
+  base::SplitString(platform_ext, ' ', &platform_extensions_vec);
+
+  enabled_extensions.insert(platform_extensions_vec.begin(),
+                            platform_extensions_vec.end());
+
+  return enabled_extensions;
+}
+
 TraceWGLApi::~TraceWGLApi() {
 }