Run ShortcutHelper::AddToLauncherInBackgroundWithSkBitmap() on Worker thread instead of IO thread

chrome/browser/android/shortcut_helper.h

 // Copyright 2013 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_SHORTCUT_HELPER_H_
 #define CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/callback_forward.h"
@@ skipping 10 matching lines @@
 // ShortcutHelper in Java.
 class ShortcutHelper {
  public:
   // Registers JNI hooks.
   static bool RegisterShortcutHelper(JNIEnv* env);
 
   // Adds a shortcut to the launcher using a SkBitmap. The type of shortcut
   // added depends on the properties in |info|. Calls one of
   // InstallWebApkInBackgroundWithSkBitmap, AddWebappInBackgroundWithSkBitmap,
   // or AddShortcutInBackgroundWithSkBitmap.
-  // Must not be called on the UI thread.
-  static void AddToLauncherInBackgroundWithSkBitmap(
+  static void AddToLauncherWithSkBitmap(
       content::BrowserContext* browser_context,
       const ShortcutInfo& info,
       const std::string& webapp_id,
       const SkBitmap& icon_bitmap,
       const base::Closure& splash_image_callback);
 
   // Installs WebAPK and adds shortcut to the launcher.
-  // Must not be called on the UI thread.
-  static void InstallWebApkInBackgroundWithSkBitmap(
+  static void InstallWebApkWithSkBitmap(
       content::BrowserContext* browser_context,
       const ShortcutInfo& info,
       const SkBitmap& icon_bitmap);
 
   // Adds a shortcut which opens in a fullscreen window to the launcher.
   // |splash_image_callback| will be invoked once the Java-side operation has
   // completed. This is necessary as Java will asynchronously create and
   // populate a WebappDataStorage object for standalone-capable sites. This must
   // exist before the splash image can be stored.
-  // Must not be called on the UI thread.
-  static void AddWebappInBackgroundWithSkBitmap(
+  static void AddWebappWithSkBitmap(
       const ShortcutInfo& info,
       const std::string& webapp_id,
       const SkBitmap& icon_bitmap,
       const base::Closure& splash_image_callback);
 
   // Adds a shortcut which opens in a browser tab to the launcher.
-  // Must not be called on the UI thread.
-  static void AddShortcutInBackgroundWithSkBitmap(
+  static void AddShortcutWithSkBitmap(
       const ShortcutInfo& info,
       const SkBitmap& icon_bitmap);
 
   // Called after either:
   // - A request to install the WebAPK has been sent.
   // OR
   // - WebAPK creation process fails.
   // |success| indicates whether an installation request was sent. A "true"
   // value of |success| does not guarantee that the WebAPK will be successfully
   // installed.
@@ skipping 45 matching lines @@
   static GURL GetScopeFromURL(const GURL& url);
 
  private:
   ShortcutHelper() = delete;
   ~ShortcutHelper() = delete;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_