Set the unique_event_id when converting from TouchEvent to WebTouchEvent

ui/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/events/event.h"
 
 #if defined(USE_X11)
 #include <X11/extensions/XInput2.h>
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #endif
 
 #include <cmath>
 #include <cstring>
 
 #include "base/metrics/histogram.h"
 #include "base/strings/stringprintf.h"
+#include "ui/events/base_event_utils.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/dom3/dom_code.h"
 #include "ui/events/keycodes/dom3/dom_key.h"
 #include "ui/events/keycodes/dom4/keycode_converter.h"
 #include "ui/events/keycodes/keyboard_code_conversion.h"
 #include "ui/gfx/geometry/point3_f.h"
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
 #include "ui/gfx/transform.h"
 #include "ui/gfx/transform_util.h"
@@ skipping 75 matching lines @@
   const unsigned int kAllStateMask =
       Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask |
       Mod1Mask | Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask | ShiftMask |
       LockMask | ControlMask | AnyModifier;
   return event && (event->xkey.state & ~kAllStateMask) != 0;
 #else
   return false;
 #endif
 }
 
-unsigned long long get_next_touch_event_id() {
-  static unsigned long long id = 0;
-  return id++;
-}
-
 }  // namespace
 
 namespace ui {
 
 ////////////////////////////////////////////////////////////////////////////////
 // Event
 
 // static
 scoped_ptr<Event> Event::Clone(const Event& event) {
   if (event.IsKeyEvent()) {
@@ skipping 384 matching lines @@
 // This value matches GTK+ wheel scroll amount.
 const int MouseWheelEvent::kWheelDelta = 53;
 #endif
 
 ////////////////////////////////////////////////////////////////////////////////
 // TouchEvent
 
 TouchEvent::TouchEvent(const base::NativeEvent& native_event)
     : LocatedEvent(native_event),
       touch_id_(GetTouchId(native_event)),
-      unique_event_id_(get_next_touch_event_id()),
+      unique_event_id_(ui::GetNextTouchEventId()),
       radius_x_(GetTouchRadiusX(native_event)),
       radius_y_(GetTouchRadiusY(native_event)),
       rotation_angle_(GetTouchAngle(native_event)),
       force_(GetTouchForce(native_event)),
       may_cause_scrolling_(false),
       should_remove_native_touch_id_mapping_(false) {
   latency()->AddLatencyNumberWithTimestamp(
       INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT, 0, 0,
       base::TimeTicks::FromInternalValue(time_stamp().ToInternalValue()), 1);
   latency()->AddLatencyNumber(INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
 
   FixRotationAngle();
   if (type() == ET_TOUCH_RELEASED || type() == ET_TOUCH_CANCELLED)
     should_remove_native_touch_id_mapping_ = true;
 }
 
 TouchEvent::TouchEvent(EventType type,
                        const gfx::PointF& location,
                        int touch_id,
                        base::TimeDelta time_stamp)
     : LocatedEvent(type, location, location, time_stamp, 0),
       touch_id_(touch_id),
-      unique_event_id_(get_next_touch_event_id()),
+      unique_event_id_(ui::GetNextTouchEventId()),
       radius_x_(0.0f),
       radius_y_(0.0f),
       rotation_angle_(0.0f),
       force_(0.0f),
       may_cause_scrolling_(false),
       should_remove_native_touch_id_mapping_(false) {
   latency()->AddLatencyNumber(INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
 }
 
 TouchEvent::TouchEvent(EventType type,
                        const gfx::PointF& location,
                        int flags,
                        int touch_id,
                        base::TimeDelta time_stamp,
                        float radius_x,
                        float radius_y,
                        float angle,
                        float force)
     : LocatedEvent(type, location, location, time_stamp, flags),
       touch_id_(touch_id),
-      unique_event_id_(get_next_touch_event_id()),
+      unique_event_id_(ui::GetNextTouchEventId()),
       radius_x_(radius_x),
       radius_y_(radius_y),
       rotation_angle_(angle),
       force_(force),
       may_cause_scrolling_(false),
       should_remove_native_touch_id_mapping_(false) {
   latency()->AddLatencyNumber(INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
   FixRotationAngle();
 }
 
@@ skipping 432 matching lines @@
                    gfx::PointF(x, y),
                    time_stamp,
                    flags | EF_FROM_TOUCH),
       details_(details) {
 }
 
 GestureEvent::~GestureEvent() {
 }
 
 }  // namespace ui