Get rid of the following dependencies from content:

chrome/renderer/chrome_content_renderer_client.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/renderer/chrome_content_renderer_client.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 486 matching lines @@
   if (url.SchemeIs(chrome::kExtensionScheme) &&
       !ExtensionResourceRequestPolicy::CanRequestResource(
           url, GURL(frame->url()), extension_dispatcher_->extensions())) {
     *new_url = GURL("chrome-extension://invalid/");
     return true;
   }
 
   return false;
 }
 
-FilePath ChromeContentRendererClient::GetMediaLibraryPath() {
-  FilePath rv;
-  PathService::Get(chrome::DIR_MEDIA_LIBS, &rv);
-  return rv;
-}
-
 bool ChromeContentRendererClient::ShouldPumpEventsDuringCookieMessage() {
   // We only need to pump events for chrome frame processes as the
   // cookie policy is controlled by the host browser (IE). If the
   // policy is set to prompt then the host would put up UI which
   // would require plugins if any to also pump to ensure that we
   // don't have a deadlock.
   return CommandLine::ForCurrentProcess()->HasSwitch(switches::kChromeFrame);
 }
 
 void ChromeContentRendererClient::DidCreateScriptContext(WebFrame* frame) {
@@ skipping 55 matching lines @@
   if (old_url == new_url) {
     bool is_extension_url = !!extensions->GetByURL(new_url);
     if (is_extension_url != extension_dispatcher_->is_extension_process())
       return true;
   }
 
   return !extensions->InSameExtent(old_url, new_url);
 }
 
 }  // namespace chrome