Add additional metrics for main intent behaviors.

chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
index 9a685eef10f3dac2f34afa42870833ae0b82944b..6b57ebb41b09ff3a9c63eb48646ec59383c02235 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java
@@ -761,11 +761,13 @@ public class ChromeTabbedActivity extends ChromeActivity implements OverviewMode
                 normalTabModel.setIndex(
                         TabModelUtils.getTabIndexById(normalTabModel, tab.getId()),
                         TabSelectionType.FROM_USER);
+                RecordUserAction.record("MobileStartup.MainIntent.NTPCreatedDueToInactivity");
                 return true;
             }
         }
 
         getTabCreator(false).launchUrl(UrlConstants.NTP_URL, TabLaunchType.FROM_EXTERNAL_APP);
+        RecordUserAction.record("MobileStartup.MainIntent.NTPCreatedDueToInactivity");

[Ilya Sherman, 2017/03/28 18:19:54]

nit: Could you move this to be above the for loop, so that the line isn't
repeated?  It looks like it's guaranteed to happen on all code paths, right?

[Ted C, 2017/03/28 20:32:22]

There is a return true at the top of the if check above that return without
logging intentionally.  I didn't like the look of this either, so I uploaded a
version that only logs it once with a bit of tweak of the ordering.

         return true;
     }