Respect the disabled extension list during binding initialization.

ui/gl/egl_api_unittest.cc

 // Copyright 2015 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 "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gl/gl_egl_api_implementation.h"
 #include "ui/gl/gl_switches.h"
 
@@ skipping 21 matching lines @@
     fake_extension_string_ = "";
   }
 
   void InitializeAPI(base::CommandLine* command_line) {
     api_.reset(new RealEGLApi());
     g_current_egl_context = api_.get();
     if (command_line)
       api_->InitializeWithCommandLine(&g_driver_egl, command_line);
     else
       api_->Initialize(&g_driver_egl);
-    api_->InitializeFilteredExtensions();
   }
 
   void SetFakeExtensionString(const char* fake_string) {
     fake_extension_string_ = fake_string;
   }
 
   static EGLBoolean GL_BINDING_CALL FakeInitialize(EGLDisplay display,
                                                    EGLint * major,
                                                    EGLint * minor) {
     return EGL_TRUE;
@@ skipping 43 matching lines @@
 
   base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
   command_line.AppendSwitchASCII(switches::kDisableGLExtensions,
                                  kFakeDisabledExtensions);
   InitializeAPI(&command_line);
 
   EXPECT_STREQ(kFilteredExtensions, GetExtensions());
 }
 
 }  // namespace gfx