BodyStreamBuffer should release WebDataConsumerHandle::Reader eagerly

third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h

Index: third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h
diff --git a/third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h b/third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h
index e0eb8f5901a9333b94776069bf7dca7ffc482330..ce8fbe9985e480086826aa7321272bb4f93b8add 100644
--- a/third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h
+++ b/third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h
@@ -25,6 +25,7 @@ class ExecutionContext;
 class MODULES_EXPORT BodyStreamBuffer final : public GarbageCollectedFinalized<BodyStreamBuffer>, public UnderlyingSource, public WebDataConsumerHandle::Client {
     WTF_MAKE_NONCOPYABLE(BodyStreamBuffer);
     USING_GARBAGE_COLLECTED_MIXIN(BodyStreamBuffer);
+    EAGERLY_FINALIZE();

[sof, 2016/02/19 18:34:26]

Add an explanatory comment so as to make it more understandable to the next one
that comes along,

   // Eager finalization needed to promptly release owned
FetchDataConsumerHandle objects.

[yhirano, 2016/02/19 18:45:20]

Done.

 public:
     // |handle| cannot be null and cannot be locked.
     explicit BodyStreamBuffer(PassOwnPtr<FetchDataConsumerHandle> /* handle */);