Modify a favicon DCHECK.

There may be more than one favicon if loading an extension favicon,
which loads for all supported scale factors immediately rather than
in an as-needed fashion.

BUG=397341

Review URL: https://codereview.chromium.org/421633002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285725 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/favicon/favicon_service.cc

@@ -403,7 +403,6 @@ void FaviconService::RunFaviconRawBitmapCallbackWithBitmapResults(
     return;
   }
 
-  DCHECK_EQ(1u, favicon_bitmap_results.size());
   favicon_base::FaviconRawBitmapResult bitmap_result =
       favicon_bitmap_results[0];