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

Source/devtools/front_end/Target.js

Index: Source/devtools/front_end/Target.js
diff --git a/Source/devtools/front_end/Target.js b/Source/devtools/front_end/Target.js
index 6d142efe38ed80e1735c58567582a87b355e6091..959a7e112c6cf2a822bde9405d2c8bfb4c34dc81 100644
--- a/Source/devtools/front_end/Target.js
+++ b/Source/devtools/front_end/Target.js
@@ -16,8 +16,18 @@ WebInspector.Target = function(connection, callback)
     this._connection = connection;
     this.isMainFrontend = false;
 
+    /**
+     * @type {boolean}
+     */
+    this.canScreencast = false;
     this.pageAgent().canScreencast(this._initializeCapability.bind(this, "canScreencast", null));
 
+    /**
+     * @type {boolean}
+     */
+    this.hasTouchInputs = false;
+    this.pageAgent().hasTouchInputs(this._initializeCapability.bind(this, "hasTouchInputs", null));
+
     if (WebInspector.experimentsSettings.powerProfiler.isEnabled())
         this.powerAgent().canProfilePower(this._initializeCapability.bind(this, "canProfilePower", null));