Index: third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.cpp |
diff --git a/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.cpp b/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.cpp |
index cbf5eda9b95dbc736a508dd338ccd244716aa4bc..200d0ba317fc6a5655325e01f63532bc247c3607 100644 |
--- a/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.cpp |
+++ b/third_party/WebKit/Source/core/offscreencanvas/OffscreenCanvas.cpp |
@@ -145,8 +145,12 @@ bool OffscreenCanvas::isPaintable() const |
OffscreenCanvasFrameDispatcher* OffscreenCanvas::getOrCreateFrameDispatcher() |
{ |
- if (!m_frameDispatcher) |
+ if (!m_frameDispatcher) { |
+ // The frame dispatcher connects the current thread of OffscreenCanvas |
+ // (either main or worker) to the browser process and remains unchanged |
+ // throughout the lifetime of this OffscreenCanvas. |
m_frameDispatcher = wrapUnique(new OffscreenCanvasFrameDispatcherImpl(m_clientId, m_localId, m_nonce, width(), height())); |
+ } |
return m_frameDispatcher.get(); |
} |