Do not show "Add to Home Screen" info bar if WebAPK is installed

chrome/browser/android/shortcut_helper.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 #define CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/callback_forward.h"
@@ skipping 54 matching lines @@
   static void StoreWebappSplashImage(const std::string& webapp_id,
                                      const SkBitmap& splash_image);
 
   // Returns the given icon, modified to match the launcher requirements.
   // This method may generate an entirely new icon; if this is the case,
   // |is_generated| will be set to |true|.
   static SkBitmap FinalizeLauncherIcon(const SkBitmap& icon,
                                        const GURL& url,
                                        bool* is_generated);
 
+  // Returns whether there is a WebAPK installed which can handle |url|.
+  static bool IsWebApkInstalled(const GURL& url);
+
  private:
   ShortcutHelper() = delete;
   ~ShortcutHelper() = delete;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_