base: Do not allow MessagePumpObservers to consume events.

chrome/browser/chromeos/device_uma.cc

 // Copyright 2013 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 "chrome/browser/chromeos/device_uma.h"
 
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
 
 #include "base/logging.h"
@@ skipping 40 matching lines @@
   }
 }
 
 void DeviceUMA::RemoveMessageLoopObserver() {
   if (is_observing_) {
     base::MessageLoopForUI::current()->RemoveObserver(this);
     is_observing_ = false;
   }
 }
 
-base::EventStatus DeviceUMA::WillProcessEvent(
-    const base::NativeEvent& event) {
+void DeviceUMA::WillProcessEvent(const base::NativeEvent& event) {
   CheckIncomingEvent(event);
-  return base::EVENT_CONTINUE;
 }
 
 void DeviceUMA::DidProcessEvent(
     const base::NativeEvent& event) {
 }
 
 void DeviceUMA::CheckTouchpadEvent(const base::NativeEvent& native_event) {
   XIDeviceEvent* xiev =
       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
   // We take only the slave event since there is no need to count twice.
@@ skipping 28 matching lines @@
         CheckTouchpadEvent(event);
       break;
     }
     default:
       break;
   }
   return;
 }
 
 }  // namespace chromeos