Implement experimental app banner flow.

chrome/browser/android/banners/app_banner_manager_android.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_ANDROID_BANNERS_APP_BANNER_MANAGER_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_MANAGER_ANDROID_H_
 
 #include <string>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 70 matching lines @@
   int GetIdealPrimaryIconSizeInPx() override;
   int GetMinimumPrimaryIconSizeInPx() override;
   bool IsWebAppInstalled(content::BrowserContext* browser_context,
                          const GURL& start_url,
                          const GURL& manifest_url) override;
   InstallableParams ParamsToPerformInstallableCheck() override;
   void PerformInstallableCheck() override;
   void OnDidPerformInstallableCheck(const InstallableData& result) override;
   void OnAppIconFetched(const SkBitmap& bitmap) override;
   void ResetCurrentPageData() override;
-  void ShowBanner() override;
+  void ShowBannerUI() override;
 
  private:
   friend class content::WebContentsUserData<AppBannerManagerAndroid>;
 
   // Creates the Java-side AppBannerManager.
   void CreateJavaBannerManager();
 
   // Returns true if |platform| and |id| are valid for querying the Play Store.
   bool CheckPlatformAndId(const std::string& platform,
                           const std::string& id);
@@ skipping 28 matching lines @@
 
   // Whether WebAPKs can be installed.
   bool can_install_webapk_;
 
   DISALLOW_COPY_AND_ASSIGN(AppBannerManagerAndroid);
 };
 
 }  // namespace banners
 
 #endif  // CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_MANAGER_ANDROID_H_