Unbreak http/tests/media/video-cookie.html b/c of overzealous sanity check.

webkit/media/buffered_resource_loader.cc

Index: webkit/media/buffered_resource_loader.cc
diff --git a/webkit/media/buffered_resource_loader.cc b/webkit/media/buffered_resource_loader.cc
index 6496f7fa9c95952c69e79c25ee05bba367988774..cfeda51d00cd0073e1171262f51190fa469e966e 100644
--- a/webkit/media/buffered_resource_loader.cc
+++ b/webkit/media/buffered_resource_loader.cc
@@ -378,12 +378,12 @@ void BufferedResourceLoader::didReceiveResponse(
   int shift = 0;
   int max_enum = base::bits::Log2Ceiling(kMaxReason);
   while (reasons) {
+    DCHECK_LT(shift, max_enum);  // Sanity check.
     if (reasons & 0x1)
       UMA_HISTOGRAM_ENUMERATION("Media.UncacheableReason", shift, max_enum);
     reasons >>= 1;
     ++shift;
   }
-  DCHECK_LT(shift, max_enum);  // Sanity check.
 
   // Expected content length can be |kPositionNotSpecified|, in that case
   // |content_length_| is not specified and this is a streaming response.