touch: Allow grabbing/ungrabbing touch devices for XInput2.

views/focus/accelerator_handler_touch.cc

Index: views/focus/accelerator_handler_touch.cc
diff --git a/views/focus/accelerator_handler_touch.cc b/views/focus/accelerator_handler_touch.cc
index 84c042df6e784caa2806133664af29e08303c86c..b24d8f09c33022f22096fe06d0344fa35107ce3c 100644
--- a/views/focus/accelerator_handler_touch.cc
+++ b/views/focus/accelerator_handler_touch.cc
@@ -15,41 +15,12 @@
 #include "views/accelerator.h"
 #include "views/event.h"
 #include "views/focus/focus_manager.h"
+#include "views/touchui/touch_factory.h"
 #include "views/widget/root_view.h"
 #include "views/widget/widget_gtk.h"
 
 namespace views {
 
-#if defined(HAVE_XINPUT2)
-// Functions related to determining touch devices.
-class TouchFactory {
- public:
-  // Keep a list of touch devices so that it is possible to determine if a
-  // pointer event is a touch-event or a mouse-event.
-  static void SetTouchDeviceListInternal(
-      const std::vector<unsigned int>& devices) {
-    for (std::vector<unsigned int>::const_iterator iter = devices.begin();
-        iter != devices.end(); ++iter) {
-      DCHECK(*iter < touch_devices.size());
-      touch_devices[*iter] = true;
-    }
-  }
-
-  // Is the device a touch-device?
-  static bool IsTouchDevice(unsigned int deviceid) {
-    return deviceid < touch_devices.size() ? touch_devices[deviceid] : false;
-  }
-
- private:
-  // A quick lookup table for determining if a device is a touch device.
-  static std::bitset<128> touch_devices;
-
-  DISALLOW_COPY_AND_ASSIGN(TouchFactory);
-};
-
-std::bitset<128> TouchFactory::touch_devices;
-#endif
-
 namespace {
 
 RootView* FindRootViewForGdkWindow(GdkWindow* gdk_window) {
@@ -78,7 +49,7 @@ bool X2EventIsTouchEvent(XEvent* xev) {
     case XI_ButtonRelease:
     case XI_Motion: {
       // Is the event coming from a touch device?
-      return TouchFactory::IsTouchDevice(
+      return TouchFactory::GetInstance()->IsTouchDevice(
           static_cast<XIDeviceEvent*>(cookie->data)->sourceid);
     }
     default:
@@ -200,7 +171,7 @@ bool DispatchXEvent(XEvent* xev) {
 
 #if defined(HAVE_XINPUT2)
 void SetTouchDeviceList(std::vector<unsigned int>& devices) {
-  TouchFactory::SetTouchDeviceListInternal(devices);
+  TouchFactory::GetInstance()->SetTouchDeviceList(devices);
 }
 #endif