Respect the disabled extension list during binding initialization.

ui/gl/gl_bindings.h

Index: ui/gl/gl_bindings.h
diff --git a/ui/gl/gl_bindings.h b/ui/gl/gl_bindings.h
index 082d240f3a3f77332791d2e496644ee30a3f4074..8cce4f6b15001197975c643a21f6dd358c3b0dd4 100644
--- a/ui/gl/gl_bindings.h
+++ b/ui/gl/gl_bindings.h
@@ -6,6 +6,7 @@
 #define UI_GL_GL_BINDINGS_H_
 
 #include <string>
+#include <set>
 
 // Includes the platform independent and platform dependent GL headers.
 // Only include this in cc files. It pulls in system headers, including
@@ -345,11 +346,15 @@ struct GL_EXPORT DriverGL {
   bool null_draw_bindings_enabled;
 
  private:
-  void InitializeDynamicBindings(GLContext* context);
+  void InitializeExtensionBindings(
+      GLContext* context,
+      const std::set<std::string>& enabled_extensions);
 };
 
 struct GL_EXPORT DriverOSMESA {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings(
+      const std::set<std::string>& enabled_extensions);
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -357,13 +362,14 @@ struct GL_EXPORT DriverOSMESA {
   ProcsOSMESA debug_fn;
   ExtensionsOSMESA ext;
 
- private:
   static std::string GetPlatformExtensions();
 };
 
 #if defined(OS_WIN)
 struct GL_EXPORT DriverWGL {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings(
+      const std::set<std::string>& enabled_extensions);
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -371,7 +377,6 @@ struct GL_EXPORT DriverWGL {
   ProcsWGL debug_fn;
   ExtensionsWGL ext;
 
- private:
   static std::string GetPlatformExtensions();
 };
 #endif
@@ -379,6 +384,8 @@ struct GL_EXPORT DriverWGL {
 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
 struct GL_EXPORT DriverEGL {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings(
+      const std::set<std::string>& enabled_extensions);
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -394,6 +401,8 @@ struct GL_EXPORT DriverEGL {
 #if defined(USE_X11)
 struct GL_EXPORT DriverGLX {
   void InitializeStaticBindings();
+  void InitializeExtensionBindings(
+      const std::set<std::string>& enabled_extensions);
   void InitializeDebugBindings();
   void ClearBindings();
 
@@ -401,7 +410,6 @@ struct GL_EXPORT DriverGLX {
   ProcsGLX debug_fn;
   ExtensionsGLX ext;
 
- private:
   static std::string GetPlatformExtensions();
 };
 #endif