Media element resource selection algorithm should "await a stable state"

third_party/WebKit/Source/core/html/HTMLMediaElement.h

Index: third_party/WebKit/Source/core/html/HTMLMediaElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.h b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
index 2a0ec2e9f3a4f7dae2749d73f9c5738d08013f5e..3606c6c0a80aa98ac50e17d5bc6133ec19ef2c0e 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -280,6 +280,8 @@ protected:
     virtual void setDisplayMode(DisplayMode mode) { m_displayMode = mode; }
 
 private:
+    class Task;
+
     void resetMediaPlayerAndMediaSource();
 
     bool alwaysCreateUserAgentShadowRoot() const final { return true; }
@@ -348,6 +350,7 @@ private:
     // loading
     void invokeLoadAlgorithm();
     void invokeResourceSelectionAlgorithm();
+    void continueResourceSelectionAlgorithm();
     void loadInternal();
     void selectMediaResource();
     void loadResource(const KURL&, ContentType&);
@@ -582,6 +585,8 @@ private:
     GC_PLUGIN_IGNORE("http://crbug.com/404577")
     RawPtrWillBeWeakMember<AudioSourceProviderClient> m_audioSourceNode;
 
+    WeakPtr<Task> m_pendingTask; // owned by Microtask
+
     // AudioClientImpl wraps an AudioSourceProviderClient.
     // When the audio format is known, Chromium calls setFormat().
     class AudioClientImpl final : public GarbageCollectedFinalized<AudioClientImpl>, public WebAudioSourceProviderClient {