[Mac] Refactor the fullscreen toolbar mouse tracker

chrome/browser/ui/BUILD.gn

 # 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.
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 2625 matching lines @@
         "cocoa/floating_bar_backing_view.h",
         "cocoa/floating_bar_backing_view.mm",
         "cocoa/framed_browser_window.h",
         "cocoa/framed_browser_window.mm",
         "cocoa/full_size_content_window.h",
         "cocoa/full_size_content_window.mm",
         "cocoa/fullscreen/fullscreen_menubar_tracker.h",
         "cocoa/fullscreen/fullscreen_menubar_tracker.mm",
         "cocoa/fullscreen/fullscreen_toolbar_animation_controller.h",
         "cocoa/fullscreen/fullscreen_toolbar_animation_controller.mm",
+        "cocoa/fullscreen/fullscreen_toolbar_mouse_tracker.h",
+        "cocoa/fullscreen/fullscreen_toolbar_mouse_tracker.mm",
         "cocoa/fullscreen_low_power_coordinator.h",
         "cocoa/fullscreen_low_power_coordinator.mm",
         "cocoa/fullscreen_toolbar_controller.h",
         "cocoa/fullscreen_toolbar_controller.mm",
         "cocoa/fullscreen_window.h",
         "cocoa/fullscreen_window.mm",
         "cocoa/global_error_bubble_controller.h",
         "cocoa/global_error_bubble_controller.mm",
         "cocoa/gradient_button_cell.h",
         "cocoa/gradient_button_cell.mm",
@@ skipping 760 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }