webapps: initial addition of splash screen icon downloading

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/jni_weak_ref.h"
 #include "base/basictypes.h"
@@ skipping 13 matching lines @@
 
 // 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);
+                              content::WebContents* web_contents,
+                              int ideal_splash_image_size_in_dp,
+                              int ideal_icon_size_in_dp);
 
   // Called by the Java counterpart to destroy its native half.
   void Destroy(JNIEnv* env, 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, jobject obj, jstring title);
 
@@ skipping 18 matching lines @@
   // 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_