Remove GestureEvent interface, and rename GestureEventImpl to GestureEvent.

ui/base/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/event.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 #endif
 
@@ skipping 355 matching lines @@
   if (type() == ET_SCROLL) {
     GetScrollOffsets(native_event, &x_offset_, &y_offset_);
     double start, end;
     GetGestureTimes(native_event, &start, &end);
   } else if (type() == ET_SCROLL_FLING_START) {
     bool is_cancel;
     GetFlingData(native_event, &x_offset_, &y_offset_, &is_cancel);
   }
 }
 
-GestureEventImpl::GestureEventImpl(EventType type,
-                                   int x,
-                                   int y,
-                                   int flags,
-                                   base::Time time_stamp,
-                                   const GestureEventDetails& details,
-                                   unsigned int touch_ids_bitfield)
+GestureEvent::GestureEvent(EventType type,
+                           int x,
+                           int y,
+                           int flags,
+                           base::Time time_stamp,
+                           const GestureEventDetails& details,
+                           unsigned int touch_ids_bitfield)
     : LocatedEvent(type, gfx::Point(x, y), gfx::Point(x, y), flags),
       details_(details),
       touch_ids_bitfield_(touch_ids_bitfield) {
   set_time_stamp(base::TimeDelta::FromSeconds(time_stamp.ToDoubleT()));
 }
 
-GestureEventImpl::~GestureEventImpl() {
+GestureEvent::~GestureEvent() {
 }
 
-int GestureEventImpl::GetLowestTouchId() const {
+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