Don't use the touch rect when targetting above the touch handles

ui/touch_selection/touch_handle_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 "ui/touch_selection/touch_handle.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/test/motion_event_test_utils.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/touch_selection/touch_handle_orientation.h"
@@ skipping 440 matching lines @@
   EXPECT_TRUE(IsDragging());
 
   // Ensure a touch size of 0 can still register a hit.
   event = MockMotionEvent(MockMotionEvent::ACTION_DOWN,
                           event_time,
                           kDefaultDrawableSize / 2.f,
                           kDefaultDrawableSize / 2.f);
   event.SetTouchMajor(0);
   EXPECT_TRUE(handle.WillHandleTouchEvent(event));
   EXPECT_TRUE(IsDragging());
+
+  // Touches centered above the handle region should never register a hit, even
+  // if the touch region intersects the handle region.
+  event = MockMotionEvent(MockMotionEvent::ACTION_DOWN, event_time,
+                          kDefaultDrawableSize / 2.f, -kTouchSize / 3.f);
+  event.SetTouchMajor(kTouchSize);
+  EXPECT_FALSE(handle.WillHandleTouchEvent(event));
+  EXPECT_FALSE(IsDragging());
 }
 
 TEST_F(TouchHandleTest, Tap) {
   TouchHandle handle(this, TouchHandleOrientation::CENTER);
   handle.SetVisible(true, TouchHandle::ANIMATION_NONE);
 
   base::TimeTicks event_time = base::TimeTicks::Now();
 
   // ACTION_CANCEL shouldn't trigger a tap.
   MockMotionEvent event(MockMotionEvent::ACTION_DOWN, event_time, 0, 0);
@@ skipping 30 matching lines @@
   event = MockMotionEvent(
       MockMotionEvent::ACTION_MOVE, event_time, kDefaultTapSlop * 2.f, 0);
   EXPECT_TRUE(handle.WillHandleTouchEvent(event));
   event = MockMotionEvent(
       MockMotionEvent::ACTION_UP, event_time, kDefaultTapSlop * 2.f, 0);
   EXPECT_TRUE(handle.WillHandleTouchEvent(event));
   EXPECT_FALSE(GetAndResetHandleTapped());
 }
 
 }  // namespace ui