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

chrome/browser/image_decoder.h

Index: chrome/browser/image_decoder.h
diff --git a/chrome/browser/image_decoder.h b/chrome/browser/image_decoder.h
index 148454be93a3a82d5c80c37336418e3fa5091a83..be745124dc8a71352e992b4636652dba7247bc72 100644
--- a/chrome/browser/image_decoder.h
+++ b/chrome/browser/image_decoder.h
@@ -44,6 +44,8 @@ class ImageDecoder : public content::UtilityProcessHostClient {
     return image_data_;
   }
 
+  void set_delegate(Delegate* delegate) { delegate_ = delegate; }
+
  private:
   // It's a reference counted object, so destructor is private.
   virtual ~ImageDecoder();