Add Startup Timing to CPM

chrome/browser/sessions/session_service.h

Index: chrome/browser/sessions/session_service.h
diff --git a/chrome/browser/sessions/session_service.h b/chrome/browser/sessions/session_service.h
index 97621cf68dba6eb3f889fb12185817babafa3f6f..687c91ab6411c9d95cf2ce6e6405cd332050392f 100644
--- a/chrome/browser/sessions/session_service.h
+++ b/chrome/browser/sessions/session_service.h
@@ -30,6 +30,10 @@ namespace content {
 class NavigationEntry;
 }
 
+namespace performance_monitor {
+class PerformanceMonitorSessionRestoreBrowserTest;
+}
+
 // SessionService ------------------------------------------------------------
 
 // SessionService is responsible for maintaining the state of open windows
@@ -54,6 +58,7 @@ class SessionService : public BaseSessionService,
                        public content::NotificationObserver {
   friend class SessionRestoreTest;
   friend class SessionServiceTestHelper;
+  friend class performance_monitor::PerformanceMonitorSessionRestoreBrowserTest;

[sky, 2012/08/07 19:48:04]

I don't want another friend class. Can you move what is needed into
SessionServiceTestHelper or another standalone class that is only built for
tests and is a friend and exposes whatever you need.

[Devlin, 2012/08/07 22:51:22]

Done. Since SessionRestoreTest needed the same thing, also removed that friend
class.

  public:
   // Used to distinguish an application window from a normal one.
   enum AppType {