Add stats collection for telemetry startup.warm.blank_page test.

components/html_viewer/html_document_oopif.cc

Index: components/html_viewer/html_document_oopif.cc
diff --git a/components/html_viewer/html_document_oopif.cc b/components/html_viewer/html_document_oopif.cc
index 37b747125a71ac30a485b56b9319fab2a4dee9ee..678c759835bf7fc16a7b13ecee09c999ed7c8d00 100644
--- a/components/html_viewer/html_document_oopif.cc
+++ b/components/html_viewer/html_document_oopif.cc
@@ -132,7 +132,7 @@ void HTMLDocumentOOPIF::Load() {
       resource_waiter_->ReleaseURLResponse().Pass();
 
   frame_ = HTMLFrameTreeManager::CreateFrameAndAttachToTree(
-      global_state_, html_document_app_, view, resource_waiter_.Pass(), this);
+      global_state_, view, resource_waiter_.Pass(), this);

[yzshen1, 2015/08/17 05:46:38]

Is it included in this patch unintentionally?

[msw, 2015/08/17 21:25:50]

No, this param is unused, so I'm removing it. I was going to use it at first,
then I realized it was redundant. |this| is passed as the HTMLFrameDelegate arg,
and |html_document_app_| is returned in the  HTMLFrameDelegate::GetApp override.

 
   // TODO(yzshen): http://crbug.com/498986 Creating DevToolsAgentImpl instances
   // causes html_viewer_apptests flakiness currently. Before we fix that we