Clean up WebDOMEvent ownership of WebCore::Event.

public/platform/WebPrivatePtr.h

Index: public/platform/WebPrivatePtr.h
diff --git a/public/platform/WebPrivatePtr.h b/public/platform/WebPrivatePtr.h
index 31d09a90bdacf2deb393721e1103359840cd7cd7..8d41e07c9558e060e8a919b65e0d40d1eea8c872 100644
--- a/public/platform/WebPrivatePtr.h
+++ b/public/platform/WebPrivatePtr.h
@@ -51,6 +51,13 @@ public:
     bool isNull() const { return !m_ptr; }
 
 #if WEBKIT_IMPLEMENTATION
+    WebPrivatePtr(const WebPrivatePtr& other)
+        : m_ptr(other.m_ptr)
+    {
+        if (m_ptr)
+            m_ptr->ref();
+    }
+

[abarth-chromium, 2013/05/22 16:21:49]

We shouldn't need to modify WebPrivatePtr

     WebPrivatePtr(const PassRefPtr<T>& prp)
         : m_ptr(prp.leakRef())
     {
@@ -97,6 +104,12 @@ private:
             m_ptr->deref();
         m_ptr = p;
     }
+#else
+    // Disable copy and assign; we define them above for the implementation, but
+    // we need to make sure that they aren't used outside there; the compiler-
+    // provided versions won't handle reference counting properly.
+    WebPrivatePtr(const WebPrivatePtr<T>&);
+    WebPrivatePtr<T>& operator=(const WebPrivatePtr<T>& other);
 #endif
 
     T* m_ptr;