Adds switch to disable generating mouse events from touch events and

ui/aura/aura_switches.cc

Index: ui/aura/aura_switches.cc
diff --git a/ui/aura/aura_switches.cc b/ui/aura/aura_switches.cc
index f0ec044e38a2aaef68f4025afb52ef04e8d7c378..7a0a764a445528508b648314f318c56da05236c1 100644
--- a/ui/aura/aura_switches.cc
+++ b/ui/aura/aura_switches.cc
@@ -11,6 +11,10 @@ namespace switches {
 // Enable the holding of mouse movements in order to throttle window resizing.
 const char kAuraDisableHoldMouseMoves[] = "aura-disable-hold-mouse-moves";
 
+// If set gesture events do not generate mouse events.
+const char kAuraDisableMouseEventsFromTouch[] =
+    "aura-disable-mouse-events-from-touch";
+
 // Initial dimensions for the host window in the form "1024x768".
 const char kAuraHostWindowSize[] = "aura-host-window-size";