PLT updates.

Fix a bug introduced by me in 65223. The boolean indicating whether histograms
have been dumped must be on navigation_state instead of page_load_histograms.

Introduce a histogram for the Web Timing page load time which measures
the commit to the start/end of the load event. Also introduce two histograms
for troubleshooting abandonment and missing starts. We will use these
histograms temporarily for vetting these metrics.

BUG=None
TEST=None

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65738 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 0 deletions

diff --git a/chrome/renderer/navigation_state.h b/chrome/renderer/navigation_state.h
index 10eff0c..ab34b12 100644
--- a/chrome/renderer/navigation_state.h
+++ b/chrome/renderer/navigation_state.h
@@ -154,6 +154,12 @@ class NavigationState : public WebKit::WebDataSource::ExtraData {
     first_paint_after_load_time_ = value;
   }
 
+  // True iff the histograms for the associated frame have been dumped.
+  bool load_histograms_recorded() const { return load_histograms_recorded_; }
+  void set_load_histograms_recorded(bool value) {
+    load_histograms_recorded_ = value;
+  }
+
   // True if we have already processed the "DidCommitLoad" event for this
   // request.  Used by session history.
   bool request_committed() const { return request_committed_; }
@@ -274,6 +280,7 @@ class NavigationState : public WebKit::WebDataSource::ExtraData {
   base::Time finish_load_time_;
   base::Time first_paint_time_;
   base::Time first_paint_after_load_time_;
+  bool load_histograms_recorded_;
   bool request_committed_;
   bool is_content_initiated_;
   int32 pending_page_id_;