Added prerendering to omnibox.

chrome/browser/prerender/prerender_final_status.cc

Index: chrome/browser/prerender/prerender_final_status.cc
diff --git a/chrome/browser/prerender/prerender_final_status.cc b/chrome/browser/prerender/prerender_final_status.cc
index 8d71e41a6768a047dce88cae8ebdfbec53eda4fd..c598106d10eb2059381ab346c76b54eb6c0eab50 100644
--- a/chrome/browser/prerender/prerender_final_status.cc
+++ b/chrome/browser/prerender/prerender_final_status.cc
@@ -51,7 +51,7 @@ COMPILE_ASSERT(arraysize(kFinalStatusNames) == FINAL_STATUS_MAX + 1,
 
 }
 
-void RecordFinalStatus(FinalStatus final_status) {
+void RecordFinalStatus(Origin origin, FinalStatus final_status) {
   DCHECK(final_status != FINAL_STATUS_MAX);
   // FINAL_STATUS_CONTROL_GROUP indicates that the PrerenderContents
   // was created only to measure "would-have-been-prerendered" for
@@ -62,6 +62,21 @@ void RecordFinalStatus(FinalStatus final_status) {
   UMA_HISTOGRAM_ENUMERATION("Prerender.FinalStatus",
                             final_status,
                             FINAL_STATUS_MAX);
+  switch (origin) {
+    case ORIGIN_LINK_REL_PRERENDER:
+      UMA_HISTOGRAM_ENUMERATION("Prerender.FinalStatus_LinkRelPrerender",
+                                final_status,
+                                FINAL_STATUS_MAX);
+      break;
+    case ORIGIN_OMNIBOX:
+      UMA_HISTOGRAM_ENUMERATION("Prerender.FinalStatus_Omnibox",

[tburkard, 2011/06/23 16:24:07]

Why not have a different top level name, such as
Prerender_Omnibox?

[dominich, 2011/06/23 16:32:47]

After I get this change in, I'm going to look at how to effectively get all of
our histograms split into per-origin histograms (and keep the total numbers
too). This will at least give me some starting statistics on how good the
omnibox prediction is.

+                                final_status,
+                                FINAL_STATUS_MAX);
+      break;
+    default:
+      NOTREACHED();
+      break;
+  };
 }
 
 const char* NameFromFinalStatus(FinalStatus final_status) {