Add suppresion of slop region touches in browser

content/browser/renderer_host/render_widget_host_view_aura_unittest.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 "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <tuple>
@@ skipping 1675 matching lines @@
   EXPECT_EQ(1U, pointer_state().GetPointerCount());
   view_->OnTouchEvent(&release);
   EXPECT_TRUE(release.synchronous_handling_disabled());
   EXPECT_EQ(0U, pointer_state().GetPointerCount());
 
   // Now start a touch event, and remove the event-handlers before the release.
   view_->OnTouchEvent(&press);
   EXPECT_TRUE(press.synchronous_handling_disabled());
   EXPECT_EQ(ui::MotionEvent::ACTION_DOWN, pointer_state().GetAction());
   EXPECT_EQ(1U, pointer_state().GetPointerCount());
-  EXPECT_EQ(3U, GetSentMessageCountAndResetSink());
+  EXPECT_EQ(2U, GetSentMessageCountAndResetSink());
 
   widget_host_->OnMessageReceived(ViewHostMsg_HasTouchEventHandlers(0, false));
 
   // All outstanding events should have already been sent but no new events
   // should get sent.
   InputEventAck ack(
       InputEventAckSource::COMPOSITOR_THREAD, blink::WebInputEvent::kTouchStart,
       INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS, press.unique_event_id());
   widget_host_->OnMessageReceived(InputHostMsg_HandleInputEvent_ACK(0, ack));
   EXPECT_EQ(0U, GetSentMessageCountAndResetSink());
@@ skipping 3737 matching lines @@
     // There is no composition in the beginning.
     EXPECT_FALSE(has_composition_text());
     SetHasCompositionTextToTrue();
     view->ImeCancelComposition();
     // The composition must have been canceled.
     EXPECT_FALSE(has_composition_text());
   }
 }
 
 }  // namespace content