events: Move EventTarget into Event.

ui/base/events/event.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/base/events/event.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 #endif
 
@@ skipping 43 matching lines @@
 bool Event::HasNativeEvent() const {
   base::NativeEvent null_event;
   std::memset(&null_event, 0, sizeof(null_event));
   return !!std::memcmp(&native_event_, &null_event, sizeof(null_event));
 }
 
 Event::Event(EventType type, int flags)
     : type_(type),
       time_stamp_(base::Time::NowFromSystemTime() - base::Time()),
       flags_(flags),
-      delete_native_event_(false) {
+      delete_native_event_(false),
+      target_(NULL) {
   Init();
 }
 
 Event::Event(const base::NativeEvent& native_event,
              EventType type,
              int flags)
     : type_(type),
       time_stamp_(EventTimeFromNative(native_event)),
       flags_(flags),
-      delete_native_event_(false) {
+      delete_native_event_(false),
+      target_(NULL) {
   InitWithNativeEvent(native_event);
 }
 
 Event::Event(const Event& copy)
     : native_event_(::CopyNativeEvent(copy.native_event_)),
       type_(copy.type_),
       time_stamp_(copy.time_stamp_),
       flags_(copy.flags_),
-      delete_native_event_(false) {
+      delete_native_event_(false),
+      target_(NULL) {
 #if defined(USE_X11)
   if (native_event_)
     delete_native_event_ = true;
 #endif
 }
 
 void Event::Init() {
   std::memset(&native_event_, 0, sizeof(native_event_));
 }
 
@@ skipping 395 matching lines @@
 int GestureEvent::GetLowestTouchId() const {
   if (touch_ids_bitfield_ == 0)
     return -1;
   int i = -1;
   // Find the index of the least significant 1 bit
   while (!(1 << ++i & touch_ids_bitfield_));
   return i;
 }
 
 }  // namespace ui