[ScreenOrientation] Hide ScreenOrientationProvider inside WebContentsImpl.

content/public/browser/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")
 
 # See //content/BUILD.gn for how this works.
 group("browser") {
   if (is_component_build) {
     public_deps = [
@@ skipping 199 matching lines @@
     "resource_dispatcher_host_delegate.h",
     "resource_dispatcher_host_login_delegate.h",
     "resource_hints.h",
     "resource_request_details.cc",
     "resource_request_details.h",
     "resource_request_info.h",
     "resource_throttle.cc",
     "resource_throttle.h",
     "save_page_type.h",
     "screen_orientation_delegate.h",
-    "screen_orientation_provider.cc",
-    "screen_orientation_provider.h",
     "security_style_explanation.h",
     "security_style_explanations.cc",
     "security_style_explanations.h",
     "service_worker_context.h",
     "service_worker_usage_info.cc",
     "service_worker_usage_info.h",
     "session_storage_namespace.h",
     "session_storage_usage_info.h",
     "site_instance.h",
     "speech_recognition_event_listener.h",
@@ skipping 51 matching lines @@
     "zygote_handle_linux.h",
     "zygote_host_linux.h",
   ]
   configs += [
     "//build/config:precompiled_headers",
     "//build/config/compiler:wexit_time_destructors",
     "//content:content_implementation",
   ]
 
   public_deps = [
-    "//device/screen_orientation/public/interfaces",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
     "//services/service_manager/public/cpp",
 
     # We expose skia headers in the public API.
     "//skia",
 
     # We expose storage headers for quota in the public API.
     "//storage/browser",
     "//third_party/WebKit/public:mojo_bindings",
@@ skipping 23 matching lines @@
 
   if (is_android) {
     deps += [ "//ui/android" ]
   }
 
   if (use_aura) {
     sources -= [ "context_factory.h" ]
     deps += [ "//ui/aura" ]
   }
 }