base: Do not allow MessagePumpObservers to consume events.

ui/aura/window_tree_host_x11.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/aura/window_tree_host_x11.h"
 
 #include <strings.h>
 #include <X11/cursorfont.h>
 #include <X11/extensions/Xfixes.h>
 #include <X11/extensions/XInput2.h>
@@ skipping 190 matching lines @@
       // Usually those will be equal,
       // if not, I am not sure what the correct value should be.
       event->set_root_location(gfx::Point(x, y));
     }
     event->set_location(gfx::Point(x, y));
 #endif  // defined(USE_XI2_MT)
   }
 
  private:
   // Overridden from base::MessagePumpObserver:
-  virtual base::EventStatus WillProcessEvent(
-      const base::NativeEvent& event) OVERRIDE {
+  virtual void WillProcessEvent(const base::NativeEvent& event) OVERRIDE {
 #if defined(USE_XI2_MT)
     if (event->type == GenericEvent &&
         (event->xgeneric.evtype == XI_TouchBegin ||
          event->xgeneric.evtype == XI_TouchUpdate ||
          event->xgeneric.evtype == XI_TouchEnd)) {
       XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(event->xcookie.data);
       xievent->event = xievent->root;
       xievent->event_x = xievent->root_x;
       xievent->event_y = xievent->root_y;
     }
 #endif  // defined(USE_XI2_MT)
-    return base::EVENT_CONTINUE;
   }
 
   virtual void DidProcessEvent(const base::NativeEvent& event) OVERRIDE {
   }
 
   // The difference in screen's native resolution pixels between
   // the border of the touchscreen and the border of the screen,
   // aka bezel sizes.
   int left_;
   int right_;
@@ skipping 679 matching lines @@
 }
 
 namespace test {
 
 void SetUseOverrideRedirectWindowByDefault(bool override_redirect) {
   default_override_redirect = override_redirect;
 }
 
 }  // namespace test
 }  // namespace aura