Touch event flag should control only DOM event firing.

third_party/WebKit/Source/web/DevToolsEmulator.cpp

Index: third_party/WebKit/Source/web/DevToolsEmulator.cpp
diff --git a/third_party/WebKit/Source/web/DevToolsEmulator.cpp b/third_party/WebKit/Source/web/DevToolsEmulator.cpp
index 65527e56ad5d310e46ec8ec76ea516648561ba8c..42105c81ebf4d441c25e12e3f1f8de31af9b83ad 100644
--- a/third_party/WebKit/Source/web/DevToolsEmulator.cpp
+++ b/third_party/WebKit/Source/web/DevToolsEmulator.cpp
@@ -446,7 +446,7 @@ void DevToolsEmulator::setTouchEventEmulationEnabled(bool enabled) {
   if (m_touchEventEmulationEnabled == enabled)
     return;
   if (!m_touchEventEmulationEnabled) {
-    m_originalTouchEnabled = RuntimeEnabledFeatures::touchEnabled();
+    m_originalTouchEnabled = RuntimeEnabledFeatures::touchEventAPIEnabled();

[mustaq, 2016/11/16 14:54:16]

Please rename DevToolsEmulator::m_originalTouchEnabled to
m_originalTouchEventAPIEnabled.

[sunyunjia, 2016/11/16 16:39:58]

Done.

     m_originalDeviceSupportsMouse =
         m_webViewImpl->page()->settings().deviceSupportsMouse();
     m_originalDeviceSupportsTouch =
@@ -454,8 +454,8 @@ void DevToolsEmulator::setTouchEventEmulationEnabled(bool enabled) {
     m_originalMaxTouchPoints =
         m_webViewImpl->page()->settings().maxTouchPoints();
   }
-  RuntimeEnabledFeatures::setTouchEnabled(enabled ? true
-                                                  : m_originalTouchEnabled);
+  RuntimeEnabledFeatures::setTouchEventAPIEnabled(
+      enabled ? true : m_originalTouchEnabled);
   if (!m_originalDeviceSupportsTouch) {
     m_webViewImpl->page()->settings().setDeviceSupportsMouse(
         enabled ? false : m_originalDeviceSupportsMouse);