Web app: set a flag on the Intent if the icon was generated by Chromium.

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h

Index: chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
diff --git a/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h b/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
index b3927ecc2869a6dc9e9537976e7af2782a882ae1..173b45fca46414b41e825734e18081bd35dbe24c 100644
--- a/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
+++ b/chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h
@@ -41,8 +41,11 @@ class AddToHomescreenDataFetcher
     virtual void OnUserTitleAvailable(const base::string16& title) = 0;
 
     // Converts the icon into one that can be used on the Android Home screen.
+    // |is_generated| is an out-param that indicates whether the icon was
+    // generated by Chrome.
     virtual SkBitmap FinalizeLauncherIcon(const SkBitmap& icon,
-                                          const GURL& url) = 0;
+                                          const GURL& url,
+                                          bool* is_generated) = 0;
 
     // Called when all the data needed to create a shortcut is available.
     virtual void OnDataAvailable(const ShortcutInfo& info,
@@ -95,7 +98,7 @@ class AddToHomescreenDataFetcher
   void OnManifestIconFetched(const SkBitmap& icon);
 
   // Notifies the observer that the shortcut data is all available.
-  void NotifyObserver(const SkBitmap& icon);
+  void NotifyObserver(const SkBitmap& icon, bool is_generated);
 
   Observer* weak_observer_;