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

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
===================================================================
--- chrome/browser/profiles/profile.h	(revision 108608)
+++ chrome/browser/profiles/profile.h	(working copy)
@@ -13,6 +13,7 @@
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "chrome/browser/net/preconnect.h" // TODO: remove this.
+#include "chrome/browser/net/pref_proxy_config_tracker.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "content/browser/browser_context.h"
 
@@ -66,7 +67,6 @@
 class HostContentSettingsMap;
 class NavigationController;
 class PasswordStore;
-class PrefProxyConfigTracker;
 class PrefService;
 class ProfileSyncFactory;
 class ProfileSyncService;