Allow installing apps via the AppBannerInfoBar

chrome/browser/ui/android/infobars/app_banner_infobar.h

 // Copyright 2015 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_UI_ANDROID_INFOBARS_APP_BANNER_INFOBAR_H_
 #define CHROME_BROWSER_UI_ANDROID_INFOBARS_APP_BANNER_INFOBAR_H_
 
 #include "base/android/scoped_java_ref.h"
 #include "base/basictypes.h"
 #include "chrome/browser/ui/android/infobars/confirm_infobar.h"
@@ skipping 11 matching lines @@
       scoped_ptr<banners::AppBannerInfoBarDelegate> delegate,
       const base::android::ScopedJavaGlobalRef<jobject>& japp_data);
 
   // Constructs an AppBannerInfoBar promoting a web app.
   AppBannerInfoBar(
       scoped_ptr<banners::AppBannerInfoBarDelegate> delegate,
       const GURL& app_url);
 
   ~AppBannerInfoBar() override;
 
+  // Called when the installation state of the app may have changed.
+  // Updates the InfoBar visuals to match the new state and re-enables controls
+  // that may have been disabled.
+  void OnInstallStateChanged(int new_state);
+
  private:
   // InfoBarAndroid overrides.
   base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
       JNIEnv* env) override;
 
   // Native app: Details about the app.
   base::android::ScopedJavaGlobalRef<jobject> japp_data_;
 
   // Web app: URL for the app.
   GURL app_url_;
 
   base::android::ScopedJavaGlobalRef<jobject> java_infobar_;
 
   DISALLOW_COPY_AND_ASSIGN(AppBannerInfoBar);
 };
 
 #endif  // CHROME_BROWSER_UI_ANDROID_INFOBARS_APP_BANNER_INFOBAR_H_