cheets: remove setWallpaper from ArcIntentHelper.

chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.h

 // Copyright 2016 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_CHROMEOS_ARC_WALLPAPER_ARC_WALLPAPER_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_WALLPAPER_ARC_WALLPAPER_SERVICE_H_
 
 #include <stdint.h>
 #include <vector>
 
@@ skipping 20 matching lines @@
   explicit ArcWallpaperService(ArcBridgeService* bridge_service);
   ~ArcWallpaperService() override;
 
   // InstanceHolder<mojom::WallpaperInstance>::Observer overrides.
   void OnInstanceReady() override;
   void OnInstanceClosed() override;
 
   // mojom::WallpaperHost overrides.
   // TODO(muyuanli): change callback prototype when use_new_wrapper_types is
   // updated and merge them with the functions below.
-  void SetWallpaper(const std::vector<uint8_t>& png_data) override;
+  void SetWallpaper(const std::vector<uint8_t>& data) override;
   void GetWallpaper(const GetWallpaperCallback& callback) override;
 
   // ImageDecoder::ImageRequest implementation.
   void OnImageDecoded(const SkBitmap& bitmap) override;
   void OnDecodeImageFailed() override;
 
   // WallpaperControllerObserver implementation.
   void OnWallpaperDataChanged() override;
 
  private:
   mojo::Binding<mojom::WallpaperHost> binding_;
   DISALLOW_COPY_AND_ASSIGN(ArcWallpaperService);
 };
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_WALLPAPER_ARC_WALLPAPER_SERVICE_H_