Remove a chrome dependency by removing Prerender from ResourceDispatcherHost.

chrome/test/testing_browser_process.h

Index: chrome/test/testing_browser_process.h
diff --git a/chrome/test/testing_browser_process.h b/chrome/test/testing_browser_process.h
index 7a1ffcd923d0567c5d8347ef33a2992bd741b26a..3fc3c7d500ac571fbc050b015a0ad64aff08f6fc 100644
--- a/chrome/test/testing_browser_process.h
+++ b/chrome/test/testing_browser_process.h
@@ -32,6 +32,10 @@ namespace policy {
 class BrowserPolicyConnector;
 }
 
+namespace prerender {
+class PrerenderTracker;
+}
+
 namespace ui {
 class Clipboard;
 }
@@ -141,6 +145,8 @@ class TestingBrowserProcess : public BrowserProcess {
 
   virtual ChromeNetLog* net_log();
 
+  virtual prerender::PrerenderTracker* prerender_tracker();
+
 #if defined(IPC_MESSAGE_LOG_ENABLED)
   virtual void SetIPCLoggingEnabled(bool enable) {}
 #endif
@@ -165,6 +171,7 @@ class TestingBrowserProcess : public BrowserProcess {
   scoped_ptr<ProfileManager> profile_manager_;
   scoped_ptr<NotificationUIManager> notification_ui_manager_;
   scoped_ptr<printing::BackgroundPrintingManager> background_printing_manager_;
+  scoped_ptr<prerender::PrerenderTracker> prerender_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingBrowserProcess);
 };