Make CanvasRenderingContext not inherit from ActiveDOMObject

third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp

Index: third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp b/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
index 517c7fbf0c8ab8f54121e1d06239e9c3d9bfe74d..214e2d25363f92b0efe82842f800dbe4df4f6f60 100644
--- a/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
@@ -31,10 +31,8 @@
 namespace blink {
 
 CanvasRenderingContext::CanvasRenderingContext(HTMLCanvasElement* canvas)
-    : ActiveDOMObject(&canvas->document())
-    , m_canvas(canvas)
+    : m_canvas(canvas)
 {
-    suspendIfNeeded();
 }
 
 CanvasRenderingContext::ContextType CanvasRenderingContext::contextTypeFromId(const String& id)
@@ -84,17 +82,6 @@ bool CanvasRenderingContext::wouldTaintOrigin(CanvasImageSource* imageSource)
 DEFINE_TRACE(CanvasRenderingContext)
 {
     visitor->trace(m_canvas);
-    ActiveDOMObject::trace(visitor);
-}
-
-bool CanvasRenderingContext::hasPendingActivity() const
-{
-    return false;
-}
-
-void CanvasRenderingContext::didMoveToNewDocument(Document* document)
-{
-    ActiveDOMObject::didMoveToNewExecutionContext(document);
 }
 
 } // namespace blink