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

chrome/browser/chrome_content_browser_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 123 matching lines @@
       const GURL& url, content::ResourceContext* context) OVERRIDE;
   virtual void ResourceDispatcherHostCreated() OVERRIDE;
   virtual content::SpeechInputManagerDelegate*
       GetSpeechInputManagerDelegate() OVERRIDE;
   virtual ui::Clipboard* GetClipboard() OVERRIDE;
   virtual MHTMLGenerationManager* GetMHTMLGenerationManager() OVERRIDE;
   virtual net::NetLog* GetNetLog() OVERRIDE;
   virtual content::AccessTokenStore* CreateAccessTokenStore() OVERRIDE;
   virtual bool IsFastShutdownPossible() OVERRIDE;
   virtual void OverrideWebkitPrefs(RenderViewHost* rvh,
+                                   const GURL& url,
                                    WebPreferences* prefs) OVERRIDE;
   virtual void UpdateInspectorSetting(RenderViewHost* rvh,
                                       const std::string& key,
                                       const std::string& value) OVERRIDE;
   virtual void ClearInspectorSettings(RenderViewHost* rvh) OVERRIDE;
   virtual void BrowserURLHandlerCreated(BrowserURLHandler* handler) OVERRIDE;
   virtual void ClearCache(RenderViewHost* rvh) OVERRIDE;
   virtual void ClearCookies(RenderViewHost* rvh) OVERRIDE;
   virtual FilePath GetDefaultDownloadDirectory() OVERRIDE;
   virtual std::string GetDefaultDownloadName() OVERRIDE;
@@ skipping 14 matching lines @@
  private:
   // Set of origins that can use TCP/UDP private APIs from NaCl.
   std::set<std::string> allowed_socket_origins_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_