Getting rid of SurfaceIdHandler as it is no longer needed.

services/ui/public/cpp/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/ui.gni")
 
 # This is the public target. It contains only the public headers. The
 # implementation (and private haders) are in 'internal'.
 source_set("cpp") {
   sources = [
     "input_event_handler.h",
     "property_type_converters.h",
     "raster_thread_helper.h",
     "scoped_window_ptr.h",
-    "surface_id_handler.h",
     "window.h",
     "window_compositor_frame_sink.h",
     "window_manager_delegate.h",
     "window_observer.h",
     "window_property.h",
     "window_tracker.h",
     "window_tree_client.h",
     "window_tree_client_delegate.h",
     "window_tree_client_observer.h",
     "window_tree_host_factory.h",
@@ skipping 98 matching lines @@
   data_deps = [
     "//services/ui",
   ]
 
   defines = [ "GL_GLEXT_PROTOTYPES" ]
 
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }
 }