Add a new field "source" in launchData of chrome.app.runtime.onLaunched() to trace launch source.

extensions/browser/api/app_runtime/app_runtime_api.h

Index: extensions/browser/api/app_runtime/app_runtime_api.h
diff --git a/extensions/browser/api/app_runtime/app_runtime_api.h b/extensions/browser/api/app_runtime/app_runtime_api.h
index 1beed1d32ce2209f0cff9c6fadac48277e659cbc..5ffa24c3d460ac4f111fe8ba265d777dc7b2d28c 100644
--- a/extensions/browser/api/app_runtime/app_runtime_api.h
+++ b/extensions/browser/api/app_runtime/app_runtime_api.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
+#include "extensions/common/constants.h"
 
 class GURL;
 
@@ -38,6 +39,12 @@ class AppRuntimeEventRouter {
   static void DispatchOnLaunchedEvent(content::BrowserContext* context,

[benwells, 2014/10/21 03:51:58]

Again, can we augment this function instead of creating a new one?

[cylee1, 2014/10/21 13:41:16]

Done.

                                       const Extension* extension);
 
+  // Dispatches the onLaunched event to the given app with source parameters.
+  static void DispatchOnLaunchedEventWithSource(
+      content::BrowserContext* context,
+      const Extension* extension,
+      extensions::AppLaunchSource source);
+
   // Dispatches the onRestarted event to the given app, providing a list of
   // restored file entries from the previous run.
   static void DispatchOnRestartedEvent(content::BrowserContext* context,