Use range request for CORS access check on Android.

content/renderer/media/android/media_info_loader.cc

Index: content/renderer/media/android/media_info_loader.cc
diff --git a/content/renderer/media/android/media_info_loader.cc b/content/renderer/media/android/media_info_loader.cc
index 3c22389e46e259e06265eb931cd9f29ec40cced1..696f83fd7b04b27b7c2a07bb24c5ae7bf5ce2898 100644
--- a/content/renderer/media/android/media_info_loader.cc
+++ b/content/renderer/media/android/media_info_loader.cc
@@ -50,6 +50,12 @@ void MediaInfoLoader::Start(blink::WebFrame* frame) {
   request.setRequestContext(WebURLRequest::RequestContextVideo);
   frame->setReferrerForRequest(request, blink::WebURL());
 
+  // Since we don't actually care about the media data at this time, use a one
+  // byte range request to avoid unnecessarily downloading resources.  Not all
+  // servers support HEAD unfortunately, so use a range request; which is no
+  // worse than the previous request+cancel code.  See http://crbug.com/400788
+  request.addHTTPHeaderField("Range", "bytes=0-1");

[acolwell GONE FROM CHROMIUM, 2014/08/25 19:40:08]

nit: This is a 2 byte range request. Please update the comment.

[DaleCurtis, 2014/08/25 19:43:18]

Done.

+
   scoped_ptr<WebURLLoader> loader;
   if (test_loader_) {
     loader = test_loader_.Pass();