Update WebAPK if homescreen icon changed.

chrome/browser/android/shortcut_helper.h

Index: chrome/browser/android/shortcut_helper.h
diff --git a/chrome/browser/android/shortcut_helper.h b/chrome/browser/android/shortcut_helper.h
index bd7f0c4cdbb51ebf8fe97c7b3101f0af88aee0d4..590a4bec1d980ea31665c1ee60a64c3c0a3078b1 100644
--- a/chrome/browser/android/shortcut_helper.h
+++ b/chrome/browser/android/shortcut_helper.h
@@ -73,6 +73,12 @@ class ShortcutHelper {
   // screen.
   static int GetMinimumSplashImageSizeInDp();
 
+  // Called when the homescreen image fetch initiated in FetchHomescreenImage()
+  // completes.
+  static void OnFetchedHomescreenImage(
+      const base::android::ScopedJavaGlobalRef<jobject> j_callback,

[Xi Han, 2016/08/10 15:49:19]

java_callback?

[pkotwicz, 2016/08/10 19:03:47]

Done.

+      const SkBitmap& image);
+
   // Fetches the splash screen image and stores it inside the WebappDataStorage
   // of the webapp. The WebappDataStorage object *must* have been previously
   // created by |AddShortcutInBackgroundWithSkBitmap|; this method should be