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

webkit/media/buffered_resource_loader.h

Index: webkit/media/buffered_resource_loader.h
diff --git a/webkit/media/buffered_resource_loader.h b/webkit/media/buffered_resource_loader.h
index bcf0979bc263e211192d275927ecfede7b5487f1..32779413e6710890b417e3cf5534b54947ceb09d 100644
--- a/webkit/media/buffered_resource_loader.h
+++ b/webkit/media/buffered_resource_loader.h
@@ -169,7 +169,10 @@ class BufferedResourceLoader : public WebKit::WebURLLoaderClient {
   // Only valid to call after Start() has completed.
   bool HasSingleOrigin() const;
 
-  // Sets the defer strategy to the given value.
+  // Sets the defer strategy to the given value unless it seems unwise.
+  // Specifically downgrade kNeverDefer to kThresholdDefer if we know the
+  // current response will not be used to satisfy future requests (the cache
+  // won't help us).
   void UpdateDeferStrategy(DeferStrategy strategy);
 
   // Sets the playback rate to the given value and updates buffer window
@@ -267,6 +270,10 @@ class BufferedResourceLoader : public WebKit::WebURLLoaderClient {
   // Current buffering algorithm in place for resource loading.
   DeferStrategy defer_strategy_;
 
+  // True if the currently-reading response might be used to satisfy a future
+  // request from the cache.
+  bool might_be_reused_from_cache_in_future_;
+
   // True if Range header is supported.
   bool range_supported_;