Avoid sending touchmove events where all pointers are stationary

content/browser/renderer_host/input/input_router_impl_unittest.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 <math.h>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 1284 matching lines @@
   PressTouchPoint(1, 1);
   SendTouchEvent();
   EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
 
   // TOUCH_ACTION_NONE should disable the timeout.
   OnSetTouchAction(TOUCH_ACTION_NONE);
   SendInputEventACK(WebInputEvent::TouchStart, INPUT_EVENT_ACK_STATE_CONSUMED);
   EXPECT_EQ(1U, ack_handler_->GetAndResetAckCount());
   EXPECT_FALSE(TouchEventTimeoutEnabled());
 
-  MoveTouchPoint(0, 1, 1);
+  MoveTouchPoint(0, 1, 2);
   SendTouchEvent();
   EXPECT_FALSE(TouchEventTimeoutEnabled());
   EXPECT_EQ(1U, GetSentMessageCountAndResetSink());
 
   // Delay the move ack. The timeout should not fire.
   RunTasksAndWait(base::TimeDelta::FromMilliseconds(timeout_ms + 1));
   EXPECT_EQ(0U, ack_handler_->GetAndResetAckCount());
   EXPECT_EQ(0U, GetSentMessageCountAndResetSink());
   SendInputEventACK(WebInputEvent::TouchEnd, INPUT_EVENT_ACK_STATE_CONSUMED);
   EXPECT_EQ(1U, ack_handler_->GetAndResetAckCount());
@@ skipping 428 matching lines @@
   client_overscroll = client_->GetAndResetOverscroll();
   EXPECT_EQ(wheel_overscroll.accumulated_overscroll,
             client_overscroll.accumulated_overscroll);
   EXPECT_EQ(wheel_overscroll.latest_overscroll_delta,
             client_overscroll.latest_overscroll_delta);
   EXPECT_EQ(wheel_overscroll.current_fling_velocity,
             client_overscroll.current_fling_velocity);
 }
 
 }  // namespace content