Move SystemMonitor to src/chrome/common....

chrome/browser/browser_main.h

Index: chrome/browser/browser_main.h
===================================================================
--- chrome/browser/browser_main.h	(revision 71446)
+++ chrome/browser/browser_main.h	(working copy)
@@ -17,12 +17,15 @@
 struct MainFunctionParams;
 class MessageLoop;
 class MetricsService;
-class SystemMonitor;
 
 namespace net {
 class NetworkChangeNotifier;
 }
 
+namespace ui {
+class SystemMonitor;
+}
+
 // BrowserMainParts:
 // This class contains different "stages" to be executed in |BrowserMain()|,
 // mostly initialization. This is made into a class rather than just functions
@@ -144,7 +147,7 @@
 
   // Members initialized in |MainMessageLoopStart()| ---------------------------
   scoped_ptr<MessageLoop> main_message_loop_;
-  scoped_ptr<SystemMonitor> system_monitor_;
+  scoped_ptr<ui::SystemMonitor> system_monitor_;
   scoped_ptr<HighResolutionTimerManager> hi_res_timer_manager_;
   scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
   scoped_ptr<BrowserThread> main_thread_;