Break out more manifest parsing logic from ShortcutHelper

chrome/browser/android/banners/app_banner_manager.h

Index: chrome/browser/android/banners/app_banner_manager.h
diff --git a/chrome/browser/android/banners/app_banner_manager.h b/chrome/browser/android/banners/app_banner_manager.h
index dd30b13ecc53d019f5203dae7b86f961de9f87c0..c65d1479a5e62c29b3fe2019f5a223e7cdda43ec 100644
--- a/chrome/browser/android/banners/app_banner_manager.h
+++ b/chrome/browser/android/banners/app_banner_manager.h
@@ -87,6 +87,11 @@ class AppBannerManager : public chrome::BitmapFetcherDelegate,
   // Returns |false| if this couldn't be kicked off.
   bool FetchIcon(const GURL& image_url);
 
+  // Installs the app defined by the manifest.
+  // TODO(dfalcantara): Fold into Install() when more CLs land.
+  static void InstallManifestApp(const content::Manifest& manifest,
+                                 const SkBitmap& icon);
+
   // WebContentsObserver overrides.
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,