Added the command line flag that enables CSS Shaders: "--enable-css-custom-filter".

content/browser/tab_contents/tab_contents.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 "content/browser/tab_contents/tab_contents.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 415 matching lines @@
   prefs.accelerated_video_enabled =
       !command_line.HasSwitch(switches::kDisableAcceleratedVideo);
   prefs.partial_swap_enabled =
       command_line.HasSwitch(switches::kEnablePartialSwap);
   prefs.interactive_form_validation_enabled =
       !command_line.HasSwitch(switches::kDisableInteractiveFormValidation);
   prefs.fullscreen_enabled =
       !command_line.HasSwitch(switches::kDisableFullScreen);
   prefs.css_regions_enabled =
       command_line.HasSwitch(switches::kEnableCssRegions);
-
+  prefs.css_shaders_enabled =
+      command_line.HasSwitch(switches::kEnableCssShaders);
 
 #if defined(OS_MACOSX)
   bool default_enable_scroll_animator = true;
 #else
   // On CrOS, the launcher always passes in the --enable flag.
   bool default_enable_scroll_animator = false;
 #endif
   prefs.enable_scroll_animator = default_enable_scroll_animator;
   if (command_line.HasSwitch(switches::kEnableSmoothScrolling))
     prefs.enable_scroll_animator = true;
@@ skipping 2144 matching lines @@
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = GetView()->CreateViewForWidget(rvh);
   // Can be NULL during tests.
   if (rwh_view)
     rwh_view->SetSize(GetView()->GetContainerSize());
 }
 
 RenderViewHostImpl* TabContents::GetRenderViewHostImpl() {
   return static_cast<RenderViewHostImpl*>(GetRenderViewHost());
 }