Remove dependency on PrefChangeRegistrar and renderer_preferences_util from content.

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
===================================================================
--- content/browser/renderer_host/render_message_filter.cc	(revision 86641)
+++ content/browser/renderer_host/render_message_filter.cc	(working copy)
@@ -16,7 +16,6 @@
 #include "chrome/browser/download/download_types.h"
 #include "chrome/browser/download/download_util.h"
 #include "chrome/browser/extensions/extension_info_map.h"
-#include "chrome/browser/net/predictor_api.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
 #include "chrome/browser/notifications/notifications_prefs_cache.h"
@@ -383,7 +382,6 @@
     IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_ClearCache, OnClearCache)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ClearHostResolverCache,
                         OnClearHostResolverCache)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_ClearPredictorCache, OnClearPredictorCache)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidGenerateCacheableMetadata,
                         OnCacheableMetadataAvailable)
     IPC_MESSAGE_HANDLER(ViewHostMsg_EnableSpdy, OnEnableSpdy)
@@ -771,14 +769,6 @@
   }
 }
 
-void RenderMessageFilter::OnClearPredictorCache(int* result) {
-  // This function is disabled unless the user has enabled
-  // benchmarking extensions.
-  CHECK(CheckBenchmarkingEnabled());
-  chrome_browser_net::ClearPredictorCache();
-  *result = 0;
-}
-
 bool RenderMessageFilter::CheckPreparsedJsCachingEnabled() const {
   static bool checked = false;
   static bool result = false;