Adding histograms showing fraction of page load times

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
===================================================================
--- chrome/browser/profiles/profile_io_data.h	(revision 147972)
+++ chrome/browser/profiles/profile_io_data.h	(working copy)
@@ -30,6 +30,7 @@
 class TransportSecurityPersister;
 
 namespace chrome_browser_net {
+class CacheStats;
 class HttpServerPropertiesManager;
 class ResourcePrefetchPredictorObserver;
 }
@@ -132,7 +133,7 @@
  protected:
   class AppRequestContext : public ChromeURLRequestContext {
    public:
-    AppRequestContext();
+    AppRequestContext(chrome_browser_net::CacheStats* cache_stats);

[willchan no longer on Chromium, 2012/07/26 01:39:37]

explicit

[tburkard, 2012/07/26 02:10:40]

Done.

 
     void SetCookieStore(net::CookieStore* cookie_store);
     void SetHttpTransactionFactory(net::HttpTransactionFactory* http_factory);
@@ -201,6 +202,11 @@
   // Called when the profile is destroyed.
   void ShutdownOnUIThread();
 
+  // Returns the CacheStats object to be used for this profile
+  // (may be NULL for OTR profiles).
+  virtual chrome_browser_net::CacheStats* GetCacheStats(
+      IOThread* io_thread) const;
+
   BooleanPrefMember* enable_referrers() const {
     return &enable_referrers_;
   }
@@ -235,6 +241,10 @@
     return main_request_context_.get();
   }
 
+  chrome_browser_net::CacheStats* cache_stats() const {
+    return cache_stats_;
+  }
+
   // Destroys the ResourceContext first, to cancel any URLRequests that are
   // using it still, before we destroy the member variables that those
   // URLRequests may be accessing.
@@ -359,6 +369,8 @@
   mutable scoped_ptr<chrome_browser_net::ResourcePrefetchPredictorObserver>
       resource_prefetch_predictor_observer_;
 
+  mutable chrome_browser_net::CacheStats* cache_stats_;
+
   // TODO(jhawkins): Remove once crbug.com/102004 is fixed.
   bool initialized_on_UI_thread_;