Enable privileged WebGL extensions for Chrome extensions.

chrome/browser/tab_contents/render_view_host_delegate_helper.cc

 // Copyright (c) 2011 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 "chrome/browser/tab_contents/render_view_host_delegate_helper.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
@@ skipping 408 matching lines @@
         !command_line.HasSwitch(switches::kDisableDatabases);
     web_prefs.webaudio_enabled =
         !command_line.HasSwitch(switches::kDisableWebAudio);
     web_prefs.experimental_webgl_enabled =
         GpuProcessHost::gpu_enabled() &&
         !command_line.HasSwitch(switches::kDisable3DAPIs) &&
         !prefs->GetBoolean(prefs::kDisable3DAPIs) &&
         !command_line.HasSwitch(switches::kDisableExperimentalWebGL);
     web_prefs.gl_multisampling_enabled =
         !command_line.HasSwitch(switches::kDisableGLMultisampling);
+    web_prefs.privileged_webgl_extensions_enabled =
+        command_line.HasSwitch(switches::kEnablePrivilegedWebGLExtensions);
     web_prefs.site_specific_quirks_enabled =
         !command_line.HasSwitch(switches::kDisableSiteSpecificQuirks);
     web_prefs.allow_file_access_from_file_urls =
         command_line.HasSwitch(switches::kAllowFileAccessFromFiles);
     web_prefs.show_composited_layer_borders =
         command_line.HasSwitch(switches::kShowCompositedLayerBorders);
     web_prefs.show_composited_layer_tree =
         command_line.HasSwitch(switches::kShowCompositedLayerTree);
     web_prefs.show_fps_counter =
         command_line.HasSwitch(switches::kShowFPSCounter);
@@ skipping 104 matching lines @@
   DictionaryValue* inspector_settings = update.Get();
   inspector_settings->SetWithoutPathExpansion(key,
                                               Value::CreateStringValue(value));
 }
 
 void RenderViewHostDelegateHelper::ClearInspectorSettings(
     content::BrowserContext* browser_context) {
   Profile::FromBrowserContext(browser_context)->GetPrefs()->
       ClearPref(prefs::kWebKitInspectorSettings);
 }