aura: Remove WindowTreeHost::QueryMouseLocation().

ui/aura/aura.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 142 matching lines @@
         'aura',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'test/aura_test_base.cc',
         'test/aura_test_base.h',
         'test/aura_test_helper.cc',
         'test/aura_test_helper.h',
+        'test/aura_test_utils.cc',
+        'test/aura_test_utils.h',
         'test/env_test_helper.h',
         'test/event_generator.cc',
         'test/event_generator.h',
         'test/test_cursor_client.cc',
         'test/test_cursor_client.h',
         'test/test_focus_client.cc',
         'test/test_focus_client.h',
         'test/test_screen.cc',
         'test/test_screen.h',
         'test/test_window_tree_client.cc',
@@ skipping 116 matching lines @@
         ['OS=="linux" and ((use_allocator!="none" and use_allocator!="see_use_tcmalloc") or (use_allocator=="see_use_tcmalloc" and linux_use_tcmalloc==1))', {
           'dependencies': [
            # See http://crbug.com/162998#c4 for why this is needed.
             '../../base/allocator/allocator.gyp:allocator',
           ],
         }],
       ],
     },
   ],
 }