Determine whether to show "Add to Homescreen" dialog or WebAPK infobar

chrome/browser/android/webapps/add_to_homescreen_dialog_helper.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_WEBAPPS_ADD_TO_HOMESCREEN_DIALOG_HELPER_H_
-#define CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DIALOG_HELPER_H_
-
-#include "base/android/jni_android.h"
-#include "base/android/scoped_java_ref.h"
-#include "base/macros.h"
-#include "chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace content {
-class WebContents;
-}
-
-namespace IPC {
-class Message;
-}
-
-class GURL;
-struct ShortcutInfo;
-
-// AddToHomescreenDialogHelper is the C++ counterpart of
-// org.chromium.chrome.browser's AddToHomescreenDialogHelper in Java. The object
-// is owned by the Java object. It is created from there via a JNI (Initialize)
-// call and MUST BE DESTROYED via Destroy().
-class AddToHomescreenDialogHelper :
-    public AddToHomescreenDataFetcher::Observer {
- public:
-  AddToHomescreenDialogHelper(JNIEnv* env,
-                              jobject obj,
-                              content::WebContents* web_contents);
-
-  // Called by the Java counterpart to destroy its native half.
-  void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
-
-  // Registers JNI hooks.
-  static bool RegisterAddToHomescreenDialogHelper(JNIEnv* env);
-
-  // Adds a shortcut to the current URL to the Android home screen.
-  void AddShortcut(JNIEnv* env,
-                   const base::android::JavaParamRef<jobject>& obj,
-                   const base::android::JavaParamRef<jstring>& title);
-
-  // AddToHomescreenDataFetcher::Observer
-  void OnUserTitleAvailable(const base::string16& user_title) override;
-  void OnDataAvailable(const ShortcutInfo& info, const SkBitmap& icon) override;
-  SkBitmap FinalizeLauncherIconInBackground(const SkBitmap& icon,
-                                            const GURL& url,
-                                            bool* is_generated) override;
-
- private:
-  virtual ~AddToHomescreenDialogHelper();
-
-  // Called only when the AddToHomescreenDataFetcher has retrieved all of the
-  // data needed to add the shortcut.
-  void AddShortcut(const ShortcutInfo& info, const SkBitmap& icon);
-
-  void RecordAddToHomescreen();
-
-  // Points to the Java object.
-  base::android::ScopedJavaGlobalRef<jobject> java_ref_;
-
-  // Whether the user has requested that a shortcut be added while a fetch was
-  // in progress.
-  bool add_shortcut_pending_;
-
-  // Fetches data required to add a shortcut.
-  scoped_refptr<AddToHomescreenDataFetcher> data_fetcher_;
-
-  DISALLOW_COPY_AND_ASSIGN(AddToHomescreenDialogHelper);
-};
-
-#endif  // CHROME_BROWSER_ANDROID_WEBAPPS_ADD_TO_HOMESCREEN_DIALOG_HELPER_H_