Don't suppress HW compositing on the new file manager (chrome://files).

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 <cmath>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 439 matching lines @@
   // chrome-devtools: pages (unless it's specifically allowed).
   if ((url.SchemeIs(chrome::kChromeDevToolsScheme) ||
       url.SchemeIs(chrome::kChromeUIScheme) ||
       (url.SchemeIs(chrome::kAboutScheme) &&
        url.spec() != chrome::kAboutBlankURL)) &&
       !command_line.HasSwitch(switches::kAllowWebUICompositing)) {
     prefs.accelerated_compositing_enabled = false;
     prefs.accelerated_2d_canvas_enabled = false;
   }
 
-  content::GetContentClient()->browser()->OverrideWebkitPrefs(rvh, &prefs);
+  content::GetContentClient()->browser()->OverrideWebkitPrefs(rvh, url, &prefs);
 
   return prefs;
 }
 
 NavigationControllerImpl& TabContents::GetControllerImpl() {
   return controller_;
 }
 
 RenderViewHostManager* TabContents::GetRenderManagerForTesting() {
   return &render_manager_;
@@ skipping 2001 matching lines @@
                    save_info,
                    this);
 }
 
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = GetView()->CreateViewForWidget(rvh);
   // Can be NULL during tests.
   if (rwh_view)
     rwh_view->SetSize(GetView()->GetContainerSize());
 }