touch: Always expect XInput2 availability.

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 23862d42be00ea43dcbe7ca5edbe1f60267f6fe1..84129daa22ebc44be0b9d980113260aa69e25403 100644
--- a/views/focus/accelerator_handler_touch.cc
+++ b/views/focus/accelerator_handler_touch.cc
@@ -6,11 +6,7 @@
 
 #include <bitset>
 #include <gtk/gtk.h>
-#if defined(HAVE_XINPUT2)
 #include <X11/extensions/XInput2.h>
-#else
-#include <X11/Xlib.h>
-#endif
 
 #include "views/accelerator.h"
 #include "views/events/event.h"
@@ -43,7 +39,6 @@ Widget* FindWidgetForGdkWindow(GdkWindow* gdk_window) {
 
 }  // namespace
 
-#if defined(HAVE_XINPUT2)
 bool DispatchX2Event(Widget* widget, XEvent* xev) {
   XGenericEventCookie* cookie = &xev->xcookie;
   switch (cookie->evtype) {
@@ -107,13 +102,10 @@ bool DispatchX2Event(Widget* widget, XEvent* xev) {
   return false;
 }
 
-#endif  // HAVE_XINPUT2
-
 bool DispatchXEvent(XEvent* xev) {
   GdkDisplay* gdisp = gdk_display_get_default();
   XID xwindow = xev->xany.window;
 
-#if defined(HAVE_XINPUT2)
   if (xev->type == GenericEvent) {
     if (!TouchFactory::GetInstance()->ShouldProcessXI2Event(xev))
       return true;  // Consume the event.
@@ -127,7 +119,6 @@ bool DispatchXEvent(XEvent* xev) {
     XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(cookie->data);
     xwindow = xiev->event;
   }
-#endif
 
   GdkWindow* gwind = gdk_window_lookup_for_display(gdisp, xwindow);
   Widget* widget = FindWidgetForGdkWindow(gwind);
@@ -159,22 +150,18 @@ bool DispatchXEvent(XEvent* xev) {
         return widget->OnMouseEvent(mouseev);
       }
 
-#if defined(HAVE_XINPUT2)
       case GenericEvent: {
         return DispatchX2Event(widget, xev);
       }
-#endif
     }
   }
 
   return false;
 }
 
-#if defined(HAVE_XINPUT2)
 void SetTouchDeviceList(std::vector<unsigned int>& devices) {
   TouchFactory::GetInstance()->SetTouchDeviceList(devices);
 }
-#endif
 
 AcceleratorHandler::AcceleratorHandler() {}