[DevTools] Disable touch emulation on devices with touch input.

Source/web/WebDevToolsAgentImpl.cpp

 /*
  * Copyright (C) 2010-2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 189 matching lines @@
     : m_hostId(client->hostIdentifier())
     , m_client(client)
     , m_webViewImpl(webViewImpl)
     , m_attached(false)
     , m_generatingEvent(false)
     , m_deviceMetricsEnabled(false)
     , m_emulateViewportEnabled(false)
     , m_originalViewportEnabled(false)
     , m_isOverlayScrollbarsEnabled(false)
     , m_touchEventEmulationEnabled(false)
-    , m_originalTouchEnabled(false)
-    , m_originalDeviceSupportsMouse(false)
 {
     ASSERT(m_hostId > 0);
     ClientMessageLoopAdapter::ensureClientMessageLoopCreated(m_client);
 }
 
 WebDevToolsAgentImpl::~WebDevToolsAgentImpl()
 {
     ClientMessageLoopAdapter::inspectedViewClosed(m_webViewImpl);
     if (m_attached)
         blink::Platform::current()->currentThread()->removeTaskObserver(this);
@@ skipping 155 matching lines @@
         params.deviceScaleFactor = deviceScaleFactor;
         params.viewSize = WebSize(width, height);
         params.fitToView = fitWindow;
         params.viewInsets = WebSize(10, 10);
         m_client->enableDeviceEmulation(params);
     }
 }
 
 void WebDevToolsAgentImpl::setTouchEventEmulationEnabled(bool enabled)
 {
-    if (m_touchEventEmulationEnabled == enabled)
-        return;
-
-    if (!m_touchEventEmulationEnabled) {
-        m_originalTouchEnabled = RuntimeEnabledFeatures::touchEnabled();
-        if (m_webViewImpl->page())
-            m_originalDeviceSupportsMouse = m_webViewImpl->page()->settings().deviceSupportsMouse();
-    }
-    RuntimeEnabledFeatures::setTouchEnabled(enabled ? true : m_originalTouchEnabled);
-    if (m_webViewImpl->page())
-        m_webViewImpl->page()->settings().setDeviceSupportsMouse(enabled ? false : m_originalDeviceSupportsMouse);
     m_client->setTouchEventEmulationEnabled(enabled, m_emulateViewportEnabled);
     m_touchEventEmulationEnabled = enabled;
-    m_webViewImpl->mainFrameImpl()->frame()->view()->layout();
 }
 
 void WebDevToolsAgentImpl::enableViewportEmulation()
 {
     if (m_emulateViewportEnabled)
         return;
     m_emulateViewportEnabled = true;
     m_isOverlayScrollbarsEnabled = RuntimeEnabledFeatures::overlayScrollbarsEnabled();
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(true);
     m_originalViewportEnabled = RuntimeEnabledFeatures::cssViewportEnabled();
@@ skipping 308 matching lines @@
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_removeBreakpointCmd)
         || commandName == InspectorBackendDispatcher::commandName(InspectorBackendDispatcher::kDebugger_setBreakpointsActiveCmd);
 }
 
 void WebDevToolsAgent::processPendingMessages()
 {
     PageScriptDebugServer::shared().runPendingTasks();
 }
 
 } // namespace blink