Suppress pause-and-buffer behavior when the HTTP response won't satisfy future requests via cache.

webkit/media/buffered_data_source.cc

Index: webkit/media/buffered_data_source.cc
diff --git a/webkit/media/buffered_data_source.cc b/webkit/media/buffered_data_source.cc
index a7a01b2d2384a7209cbef99202207e5b0a646aa2..b285c9071b0b3325342e21f21a6f15a618e52835 100644
--- a/webkit/media/buffered_data_source.cc
+++ b/webkit/media/buffered_data_source.cc
@@ -280,9 +280,9 @@ void BufferedDataSource::SetPlaybackRateTask(float playback_rate) {
     loader_->UpdateDeferStrategy(BufferedResourceLoader::kThresholdDefer);
   } else if (media_has_played_ && playback_rate == 0) {
     // If the playback has started (at which point the preload value is ignored)
-    // and we're paused, then try to load as much as possible.
-    // TODO(fischman): except, don't do this if we can prove that the media
-    // cache is just throwing away the bits anyway.  http://crbug.com/123074
+    // and we're paused, then try to load as much as possible (the loader will
+    // fall back to kThresholdDefer if it knows the current response won't be
+    // useful from the cache in the future).
     loader_->UpdateDeferStrategy(BufferedResourceLoader::kNeverDefer);
   } else {
     // If media is currently playing or the page indicated preload=auto,