Set the unique_event_id when converting from TouchEvent to WebTouchEvent

ui/events/gesture_detection/motion_event_buffer_unittest.cc

 // Copyright 2014 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 "base/basictypes.h"
 #include "base/logging.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/gesture_detection/motion_event_buffer.h"
 #include "ui/events/test/motion_event_test_utils.h"
@@ skipping 63 matching lines @@
     return base::TimeDelta::FromMilliseconds(kSmallDeltaMs);
   }
 
   static base::TimeDelta ResampleDelta() {
     return base::TimeDelta::FromMilliseconds(kResampleDeltaMs);
   }
 
   static void ExpectEqualsImpl(const MotionEvent& a,
                                const MotionEvent& b,
                                bool ignore_history) {
-    EXPECT_EQ(a.GetId(), b.GetId());
     EXPECT_EQ(a.GetAction(), b.GetAction());
     if (a.GetAction() == MotionEvent::ACTION_POINTER_DOWN ||
         a.GetAction() == MotionEvent::ACTION_POINTER_UP) {
       EXPECT_EQ(a.GetActionIndex(), b.GetActionIndex());
     }
     EXPECT_EQ(a.GetButtonState(), b.GetButtonState());
     EXPECT_EQ(a.GetEventTime(), b.GetEventTime());
 
     ASSERT_EQ(a.GetPointerCount(), b.GetPointerCount());
     for (size_t i = 0; i < a.GetPointerCount(); ++i) {
@@ skipping 770 matching lines @@
 TEST_F(MotionEventBufferTest, Resampling150to60) {
   base::TimeDelta flush_time_delta =
       base::TimeDelta::FromMillisecondsD(1000. / 60.);
   base::TimeDelta event_time_delta =
       base::TimeDelta::FromMillisecondsD(1000. / 150.);
 
   RunResample(flush_time_delta, event_time_delta);
 }
 
 }  // namespace ui