Replace AllowCrossThreadAccess() + ThreadSafeRefCounted pointers with PassRefPtr

third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.cpp

Index: third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.cpp b/third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.cpp
index d09f4da2661e174d08fddfb40ec66d2664079627..845c9d2a73877de8698a21b85b6598c3deba3c80 100644
--- a/third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/MediaElementAudioSourceNode.cpp
@@ -177,9 +177,7 @@ void MediaElementAudioSourceHandler::process(size_t numberOfFrames)
                 m_maybePrintCORSMessage = false;
                 if (context()->getExecutionContext()) {
                     context()->getExecutionContext()->postTask(BLINK_FROM_HERE,
-                        createCrossThreadTask(&MediaElementAudioSourceHandler::printCORSMessage,
-                            AllowCrossThreadAccess(this),
-                            m_currentSrcString));
+                        createCrossThreadTask(&MediaElementAudioSourceHandler::printCORSMessage, PassRefPtr<MediaElementAudioSourceHandler>(this), m_currentSrcString));

[hiroshige, 2016/05/17 03:46:12]

I merged mulitiple lines into one here, just to avoid a presubmit error:
when I replaced a line
with a line
the presubmit script thinks it is a declaration of PassRefPtr as a local
variable (because it is PassRefPtr at the line head?) and reports an error.

Other workarounds might be:
- Introduce wrapPassRefPtr(), or
- Fix the presubmit script.

                 }
             }
             outputBus->zero();