[cros] Initial WebRTC-enabled implementation of user image picker on OOBE.

chrome/browser/image_decoder.cc

Index: chrome/browser/image_decoder.cc
diff --git a/chrome/browser/image_decoder.cc b/chrome/browser/image_decoder.cc
index a345c773630f4c7d96a99b62ebccaf24ceca469a..5548097944ee54d583ef587372a965fb81edaf91 100644
--- a/chrome/browser/image_decoder.cc
+++ b/chrome/browser/image_decoder.cc
@@ -48,12 +48,14 @@ void ImageDecoder::OnDecodeImageSucceeded(const SkBitmap& decoded_image) {
   DCHECK(BrowserThread::CurrentlyOn(target_thread_id_));
   if (delegate_)
     delegate_->OnImageDecoded(this, decoded_image);
+  Release();
 }
 
 void ImageDecoder::OnDecodeImageFailed() {
   DCHECK(BrowserThread::CurrentlyOn(target_thread_id_));
   if (delegate_)
     delegate_->OnDecodeImageFailed(this);
+  Release();
 }
 
 void ImageDecoder::DecodeImageInSandbox(