arc: Convert more Mojo types to STL

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

Index: chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.cc
diff --git a/chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.cc b/chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.cc
index 971bc3c8b3689a6458f696943e0b747e2e343369..1d575038ce1f4bd7fab00aa7ff09516a499a0544 100644
--- a/chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.cc
+++ b/chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.cc
@@ -109,11 +109,11 @@ void ArcWallpaperService::OnInstanceClosed() {
     wc->RemoveObserver(this);
 }
 
-void ArcWallpaperService::SetWallpaper(mojo::Array<uint8_t> png_data) {
+void ArcWallpaperService::SetWallpaper(const std::vector<uint8_t>& png_data) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   ImageDecoder::Cancel(this);
-  ImageDecoder::StartWithOptions(this, png_data.PassStorage(),
-                                 ImageDecoder::ROBUST_PNG_CODEC, true);
+  ImageDecoder::StartWithOptions(this, png_data, ImageDecoder::ROBUST_PNG_CODEC,
+                                 true);
 }
 
 void ArcWallpaperService::GetWallpaper(const GetWallpaperCallback& callback) {