// static
PassOwnPtrWillBeRawPtr<WebDevToolsAgentImpl> WebDevToolsAgentImpl::create(WebLocalFrameImpl* frame, WebDevToolsAgentClient* client)
{
    WebViewImpl* view = frame->viewImpl();
    bool isMainFrame = view && view->mainFrameImpl() == frame;
    if (!isMainFrame) {
        WebDevToolsAgentImpl* agent = new WebDevToolsAgentImpl(frame, client, frame->inspectorOverlay());
        if (frame->frameWidget())
            agent->layerTreeViewChanged(frame->frameWidget()->layerTreeView());
        return adoptPtrWillBeNoop(agent);
    }

    WebDevToolsAgentImpl* agent = new WebDevToolsAgentImpl(frame, client, view->inspectorOverlay());
    agent->registerAgent(InspectorRenderingAgent::create(view));
    agent->registerAgent(InspectorEmulationAgent::create(view));
    // TODO(dgozman): migrate each of the following agents to frame once module is ready.
    agent->registerAgent(InspectorDatabaseAgent::create(view->page()));
    agent->registerAgent(DeviceOrientationInspectorAgent::create(view->page()));
    agent->registerAgent(InspectorFileSystemAgent::create(view->page()));
    agent->registerAgent(InspectorIndexedDBAgent::create(view->page()));
    agent->registerAgent(InspectorAccessibilityAgent::create(view->page()));
    agent->registerAgent(InspectorDOMStorageAgent::create(view->page()));
    agent->registerAgent(InspectorCacheStorageAgent::create());
    agent->layerTreeViewChanged(view->layerTreeView());
    return adoptPtrWillBeNoop(agent);
}
// static
PassOwnPtrWillBeRawPtr<WebDevToolsAgentImpl> WebDevToolsAgentImpl::create(WebLocalFrameImpl* frame, WebDevToolsAgentClient* client)
{
    WebViewImpl* view = frame->viewImpl();
    // TODO(dgozman): sometimes view->mainFrameImpl() does return null, even though |frame| is meant to be main frame.
    // See http://crbug.com/526162.
    bool isMainFrame = view && !frame->parent();
    if (!isMainFrame) {
        WebDevToolsAgentImpl* agent = new WebDevToolsAgentImpl(frame, client, nullptr);
        if (frame->frameWidget())
            agent->layerTreeViewChanged(toWebFrameWidgetImpl(frame->frameWidget())->layerTreeView());
        return adoptPtrWillBeNoop(agent);
    }

    WebDevToolsAgentImpl* agent = new WebDevToolsAgentImpl(frame, client, InspectorOverlay::create(view));
    // TODO(dgozman): we should actually pass the view instead of frame, but during
    // remote->local transition we cannot access mainFrameImpl() yet, so we have to store the
    // frame which will become the main frame later.
    agent->registerAgent(InspectorRenderingAgent::create(frame));
    agent->registerAgent(InspectorEmulationAgent::create(frame, agent));
    // TODO(dgozman): migrate each of the following agents to frame once module is ready.
    agent->registerAgent(InspectorDatabaseAgent::create(view->page()));
    agent->registerAgent(DeviceOrientationInspectorAgent::create(view->page()));
    agent->registerAgent(InspectorAccessibilityAgent::create(view->page()));
    agent->registerAgent(InspectorDOMStorageAgent::create(view->page()));
    agent->registerAgent(InspectorCacheStorageAgent::create());
    agent->layerTreeViewChanged(view->layerTreeView());
    return adoptPtrWillBeNoop(agent);
}