Trigger app banner when add to homescreen is pressed and WebAPKs are enabled.

chrome/browser/android/banners/app_banner_infobar_delegate_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_INFOBAR_DELEGATE_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_INFOBAR_DELEGATE_ANDROID_H_
 
 #include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/banners/app_banner_manager.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
-#include "content/public/common/manifest.h"
 #include "ui/gfx/image/image.h"
 #include "url/gurl.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace infobars {
 class InfoBarManager;
 }
 
 class AppBannerInfoBar;
+struct ShortcutInfo;
 
 namespace banners {
 
 // Manages installation of an app being promoted by a page.
 class AppBannerInfoBarDelegateAndroid : public ConfirmInfoBarDelegate {
  public:
   // Delegate for promoting a web app.
   AppBannerInfoBarDelegateAndroid(
       base::WeakPtr<AppBannerManager> weak_manager,
       const base::string16& app_title,
       const GURL& manifest_url,
-      const content::Manifest& manifest,
+      std::unique_ptr<ShortcutInfo> info,
       const GURL& icon_url,
       std::unique_ptr<SkBitmap> icon,
       int event_request_id,
       bool is_webapk);
 
   // Delegate for promoting an Android app.
   AppBannerInfoBarDelegateAndroid(
       const base::string16& app_title,
       const base::android::ScopedJavaGlobalRef<jobject>& native_app_data,
       std::unique_ptr<SkBitmap> icon,
@@ skipping 11 matching lines @@
   // returned to Chrome.
   void OnInstallIntentReturned(JNIEnv* env,
                                const base::android::JavaParamRef<jobject>& obj,
                                jboolean jis_installing);
 
   // Called when the InstallerDelegate task has finished.
   void OnInstallFinished(JNIEnv* env,
                          const base::android::JavaParamRef<jobject>& obj,
                          jboolean success);
 
+  // Called when user clicks the "Add To Homescreen" from the app menu to
+  // install a WebAPK. This function sets the text on infobar to "Adding" and
+  // disables the button to avoid user interaction. It also starts the WebAPK's
+  // installation process automatically.
+  void InstallWebApk(content::WebContents* web_contents);
+
  private:
   void CreateJavaDelegate();
   bool AcceptNativeApp(content::WebContents* web_contents);
   bool AcceptWebApp(content::WebContents* web_contents);
   bool AcceptWebApk(content::WebContents* web_contents);
   void SendBannerAccepted(content::WebContents* web_contents,
                           const std::string& platform);
   void OnWebApkInstallFinished(bool success, const std::string& webapk_package);
 
   // ConfirmInfoBarDelegate:
   infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
   gfx::Image GetIcon() const override;
   void InfoBarDismissed() override;
   base::string16 GetMessageText() const override;
   int GetButtons() const override;
   bool Accept() override;
   bool LinkClicked(WindowOpenDisposition disposition) override;
+  AppBannerInfoBarDelegateAndroid* AsAppBannerInfoBarDelegateAndroid() override;
 
   base::android::ScopedJavaGlobalRef<jobject> java_delegate_;
 
   // Used to fetch the splash screen icon for webapps.
   base::WeakPtr<AppBannerManager> weak_manager_;
 
   base::string16 app_title_;
   GURL manifest_url_;

[dominickn, 2016/09/06 01:49:23]

Nit: manifest_url and icon_url aren't needed in the object anymore - they were
only used to create ShortcutInfo. Delete them in the constructor and in the
object.

[Xi Han, 2016/09/06 17:20:07]

Done.

-  content::Manifest manifest_;
+  std::unique_ptr<ShortcutInfo> shortcut_info_;
 
   base::android::ScopedJavaGlobalRef<jobject> native_app_data_;
 
   GURL icon_url_;
   std::unique_ptr<SkBitmap> icon_;
 
   std::string native_app_package_;
   std::string referrer_;
   int event_request_id_;
   bool has_user_interaction_;
 
   std::string webapk_package_name_;
   bool is_webapk_;
 
   base::WeakPtrFactory<AppBannerInfoBarDelegateAndroid> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AppBannerInfoBarDelegateAndroid);
 };  // AppBannerInfoBarDelegateAndroid
 
 // Register native methods.
 bool RegisterAppBannerInfoBarDelegateAndroid(JNIEnv* env);
 
 }  // namespace banners
 
 #endif  // CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_INFOBAR_DELEGATE_ANDROID_H_