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..197f882e4160a48b101099af099f747c82b34865 100644
--- a/third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h
+++ b/third_party/WebKit/Source/modules/fetch/BodyStreamBuffer.h
@@ -25,6 +25,8 @@ class ExecutionContext;
 class MODULES_EXPORT BodyStreamBuffer final : public GarbageCollectedFinalized<BodyStreamBuffer>, public UnderlyingSource, public WebDataConsumerHandle::Client {
     WTF_MAKE_NONCOPYABLE(BodyStreamBuffer);
     USING_GARBAGE_COLLECTED_MIXIN(BodyStreamBuffer);
+    // Needed because we have to release |m_reader| promptly.
+    EAGERLY_FINALIZE();
 public:
     // |handle| cannot be null and cannot be locked.
     explicit BodyStreamBuffer(PassOwnPtr<FetchDataConsumerHandle> /* handle */);