Add UMA for app info dialog

chrome/browser/ui/app_list/app_context_menu.cc

Index: chrome/browser/ui/app_list/app_context_menu.cc
diff --git a/chrome/browser/ui/app_list/app_context_menu.cc b/chrome/browser/ui/app_list/app_context_menu.cc
index ede059983368c9c7f1309452811a2a630420b589..acea1d674a95f3f147047bf6b7a2704b0e36315c 100644
--- a/chrome/browser/ui/app_list/app_context_menu.cc
+++ b/chrome/browser/ui/app_list/app_context_menu.cc
@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/metrics/histogram.h"
 #include "chrome/browser/extensions/context_menu_matcher.h"
 #include "chrome/browser/extensions/menu_manager.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
@@ -254,6 +255,7 @@ void AppContextMenu::ExecuteCommand(int command_id, int event_flags) {
   } else if (command_id == CREATE_SHORTCUTS) {
     controller_->DoCreateShortcutsFlow(profile_, app_id_);
   } else if (command_id == SHOW_APP_INFO) {
+    UMA_HISTOGRAM_ENUMERATION("Apps.AppInfoDialogLaunched", 1, 2);

[benwells, 2014/08/04 01:41:40]

Could you define the enum now too?

[sashab, 2014/08/04 01:47:49]

Done :)

     controller_->DoShowAppInfoFlow(profile_, app_id_);
   } else if (command_id >= USE_LAUNCH_TYPE_COMMAND_START &&
              command_id < USE_LAUNCH_TYPE_COMMAND_END) {