Crop the user-specified profile image for WebUI

components/user_manager/user_image/user_image.h

Index: components/user_manager/user_image/user_image.h
diff --git a/components/user_manager/user_image/user_image.h b/components/user_manager/user_image/user_image.h
index 63970964d1c15bb2b5607d4cacd74e88091d3b76..d6621be66e37eb7b8ae9e4a4100ea956ead2ac62 100644
--- a/components/user_manager/user_image/user_image.h
+++ b/components/user_manager/user_image/user_image.h
@@ -24,6 +24,10 @@ class USER_MANAGER_EXPORT UserImage {
   // TODO(ivankr): replace with RefCountedMemory to prevent copying.
   typedef std::vector<unsigned char> Bytes;
 
+  // Encodes the given bitmap to bytes representation for WebUI. Returns null
+  // on failure.
+  static scoped_ptr<Bytes> Encode(const SkBitmap& bitmap);
+
   // Creates a new instance from a given still frame and tries to encode it
   // to bytes representation for WebUI.
   // TODO(ivankr): remove eventually.