redesign and reimplement proxy config service and tracker, revise proxy ui on cros

chrome/test/base/testing_profile.h

Index: chrome/test/base/testing_profile.h
===================================================================
--- chrome/test/base/testing_profile.h	(revision 107101)
+++ chrome/test/base/testing_profile.h	(working copy)
@@ -261,7 +261,7 @@
   }
 #endif  // defined(OS_CHROMEOS)
 
-  virtual PrefProxyConfigTracker* GetProxyConfigTracker();
+  virtual PrefProxyConfigTrackerType* GetProxyConfigTracker();
 
   // Schedules a task on the history backend and runs a nested loop until the
   // task is processed.  This has the effect of blocking the caller until the
@@ -382,7 +382,7 @@
       extension_special_storage_policy_;
 
   // The proxy prefs tracker.
-  scoped_refptr<PrefProxyConfigTracker> pref_proxy_config_tracker_;
+  scoped_ptr<PrefProxyConfigTrackerType> pref_proxy_config_tracker_;
 
   // We use a temporary directory to store testing profile data. In a multi-
   // profile environment, this is invalid and the directory is managed by the