[DevTools] Fix frontend host race and assert.

third_party/WebKit/Source/core/inspector/DevToolsHost.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 197 matching lines @@
     ScriptValue devtoolsApiObject = frontendScriptState->getFromGlobalObject("DevToolsAPI");
     ASSERT(devtoolsApiObject.isObject());
 
     RefPtrWillBeRawPtr<FrontendMenuProvider> menuProvider = FrontendMenuProvider::create(this, devtoolsApiObject, items);
     m_menuProvider = menuProvider.get();
     float zoom = targetFrame->pageZoomFactor();
     if (m_client)
         m_client->showContextMenu(targetFrame, x * zoom, y * zoom, menuProvider);
 }
 
-void DevToolsHost::showContextMenu(Event* event, const Vector<ContextMenuItem>& items)
-{
-    if (!event)
-        return;
-
-    ASSERT(m_frontendFrame);
-    ScriptState* frontendScriptState = ScriptState::forMainWorld(m_frontendFrame);
-    ScriptValue devtoolsApiObject = frontendScriptState->getFromGlobalObject("DevToolsAPI");
-    ASSERT(devtoolsApiObject.isObject());
-
-    Page* targetPage = m_frontendFrame->page();
-    if (event->target() && event->target()->executionContext() && event->target()->executionContext()->executingWindow()) {
-        LocalDOMWindow* window = event->target()->executionContext()->executingWindow();
-        if (window->document() && window->document()->page())
-            targetPage = window->document()->page();
-    }
-
-    RefPtrWillBeRawPtr<FrontendMenuProvider> menuProvider = FrontendMenuProvider::create(this, devtoolsApiObject, items);
-    targetPage->contextMenuController().showContextMenu(event, menuProvider);
-    m_menuProvider = menuProvider.get();
-}
-
 String DevToolsHost::getSelectionBackgroundColor()
 {
     return LayoutTheme::theme().activeSelectionBackgroundColor().serialized();
 }
 
 String DevToolsHost::getSelectionForegroundColor()
 {
     return LayoutTheme::theme().activeSelectionForegroundColor().serialized();
 }
 
 bool DevToolsHost::isUnderTest()
 {
     return m_client && m_client->isUnderTest();
 }
 
 bool DevToolsHost::isHostedMode()
 {
     return false;
 }
 
 } // namespace blink