Add initial support for handling touch events in desktop chrome AURA.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
===================================================================
--- content/browser/renderer_host/render_widget_host_view_aura.cc	(revision 174871)
+++ content/browser/renderer_host/render_widget_host_view_aura.cc	(working copy)
@@ -1503,7 +1503,8 @@
       }
 
       // Forward event to renderer.
-      if (CanRendererHandleEvent(event))
+      if (CanRendererHandleEvent(event) &&
+          !(event->flags() & ui::EF_FROM_TOUCH))
         host_->ForwardMouseEvent(mouse_event);
     }
     return;
@@ -1530,7 +1531,8 @@
         MakeWebMouseWheelEvent(static_cast<ui::MouseWheelEvent*>(event));
     if (mouse_wheel_event.deltaX != 0 || mouse_wheel_event.deltaY != 0)
       host_->ForwardWheelEvent(mouse_wheel_event);
-  } else if (CanRendererHandleEvent(event)) {
+  } else if (CanRendererHandleEvent(event) &&
+             !(event->flags() & ui::EF_FROM_TOUCH)) {
     WebKit::WebMouseEvent mouse_event = MakeWebMouseEvent(event);
     ModifyEventMovementAndCoords(&mouse_event);
     host_->ForwardMouseEvent(mouse_event);