Clean up WebDOMEvent ownership of WebCore::Event.

Source/WebKit/chromium/public/WebSpeechInputResult.h

Index: Source/WebKit/chromium/public/WebSpeechInputResult.h
diff --git a/Source/WebKit/chromium/public/WebSpeechInputResult.h b/Source/WebKit/chromium/public/WebSpeechInputResult.h
index 52f9528e1e7837c16ad01f070366a143bcd57c53..6ec76d40a64df5f2b1ba4532269572c39bc57a3a 100644
--- a/Source/WebKit/chromium/public/WebSpeechInputResult.h
+++ b/Source/WebKit/chromium/public/WebSpeechInputResult.h
@@ -45,6 +45,12 @@ public:
     WebSpeechInputResult(const WebSpeechInputResult& other) { assign(other); }
     ~WebSpeechInputResult() { reset(); }
 
+    WebSpeechInputResult& operator=(const WebSpeechInputResult& other)
+    {
+        assign(other);
+        return *this;
+    }

[dmichael (off chromium), 2013/05/22 17:00:28]

The compiler-provided assignment was being used in a mock object in
DumpRenderTree, and that was implicitly using the compiler-provided assignment
of WebPrivatePtr.

+
     WEBKIT_EXPORT void assign(const WebString& utterance, double confidence);
     WEBKIT_EXPORT void assign(const WebSpeechInputResult& other);
     WEBKIT_EXPORT void reset();