Remove a chrome dependency by removing Prerender from ResourceDispatcherHost.

chrome/browser/browser_process_impl.h

Index: chrome/browser/browser_process_impl.h
diff --git a/chrome/browser/browser_process_impl.h b/chrome/browser/browser_process_impl.h
index 577d4ba71b53b914a1a262eae239179dd4daf77b..6e66ed3843cedf4a5f6df350ae39e5615ed54015 100644
--- a/chrome/browser/browser_process_impl.h
+++ b/chrome/browser/browser_process_impl.h
@@ -36,6 +36,10 @@ class NotificationService;
 class PluginDataRemover;
 class TabCloseableStateWatcher;
 
+namespace prerender {
+class PrerenderTracker;
+}
+
 // Real implementation of BrowserProcess that creates and returns the services.
 class BrowserProcessImpl : public BrowserProcess,
                            public base::NonThreadSafe,
@@ -111,6 +115,8 @@ class BrowserProcessImpl : public BrowserProcess,
 
   virtual ChromeNetLog* net_log();
 
+  virtual prerender::PrerenderTracker* prerender_tracker();
+
 #if defined(IPC_MESSAGE_LOG_ENABLED)
   virtual void SetIPCLoggingEnabled(bool enable);
 #endif
@@ -276,6 +282,8 @@ class BrowserProcessImpl : public BrowserProcess,
   // Lives here so can safely log events on shutdown.
   scoped_ptr<ChromeNetLog> net_log_;
 
+  scoped_ptr<prerender::PrerenderTracker> prerender_tracker_;
+
   NotificationRegistrar notification_registrar_;
   scoped_refptr<PluginDataRemover> plugin_data_remover_;