Add a simple UMA for counting web intents dispatches.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index e08b21057b6c710083abdfeb07e9019f5d0dcaae..929f3bae317b919dbf24e6471880a29beda7ab29 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -4001,6 +4001,8 @@ void Browser::WebIntentDispatch(
   if (!web_intents::IsWebIntentsEnabled())
     return;
 
+  UMA_HISTOGRAM_COUNTS("WebIntents.Dispatch", 1);

[James Hawkins, 2012/05/02 20:03:00]

Are you familiar with all the other requirements you need to fulfill to add a
histogram?

[Greg Billock, 2012/05/02 20:11:54]

No. I looked for details, but didn't find them, so I figured this way I'd learn.
:-)

On 2012/05/02 20:03:00, James Hawkins wrote:

+
   TabContentsWrapper* tcw =
       TabContentsWrapper::GetCurrentWrapperForContents(tab);
   tcw->web_intent_picker_controller()->SetIntentsDispatcher(intents_dispatcher);