Move html_viewer from mojo/services to components.

mojo/services/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")
 
 group("services") {
   deps = [
     "//mojo/services/network/public/interfaces",
     "//third_party/mojo_services/src/clipboard/public/interfaces",
     "//third_party/mojo_services/src/content_handler/public/interfaces",
     "//third_party/mojo_services/src/geometry/public/interfaces",
     "//third_party/mojo_services/src/input_events/public/interfaces",
     "//third_party/mojo_services/src/native_viewport/public/interfaces",
     "//third_party/mojo_services/src/navigation/public/interfaces",
     "//third_party/mojo_services/src/surfaces/public/interfaces",
     "//third_party/mojo_services/src/view_manager/public/interfaces",
   ]
 
   if (!is_component_build) {
     deps += [
       "//components/clipboard",
+      "//components/html_viewer",
       "//components/kiosk_wm:window_manager",
       "//components/native_viewport",
       "//components/surfaces",
       "//components/view_manager",
       "//components/window_manager:lib",
-      "//mojo/services/html_viewer",
       "//mojo/services/network",
       "//mojo/services/tracing",
     ]
 
     # TODO(GYP): Make this work.
     if (is_mac) {
       deps -= [
+        "//components/html_viewer",
         "//components/kiosk_wm:window_manager",
         "//components/native_viewport",
         "//components/view_manager",
         "//components/window_manager:lib",
-        "//mojo/services/html_viewer",
       ]
     }
   }
 }
 
 group("tests") {
   testonly = true
   deps = [
     ":services",
   ]
   if (!is_component_build) {
     deps += [
+      "//components/html_viewer:tests",
       "//components/view_manager:view_manager_service_unittests",
       "//components/window_manager:window_manager_unittests",
-      "//mojo/services/html_viewer:tests",
     ]
 
     # TODO(GYP): Make this work.
     if (is_mac) {
       deps -= [
+        "//components/html_viewer:tests",
         "//components/view_manager:view_manager_service_unittests",
         "//components/window_manager:window_manager_unittests",
-        "//mojo/services/html_viewer:tests",
       ]
     }
   }
 }
 
 group("apptests") {
   testonly = true
   deps = [
     ":services",
   ]
   if (!is_component_build) {
     deps += [
       "//components/clipboard:apptests",
+      "//components/html_viewer:apptests",
       "//components/view_manager:apptests",
       "//components/window_manager:apptests",
-      "//mojo/services/html_viewer:apptests",
       "//mojo/services/network:apptests",
     ]
 
     # TODO(GYP): Make this work.
     if (is_mac) {
       deps -= [
+        "//components/html_viewer:apptests",
         "//components/view_manager:apptests",
         "//components/window_manager:apptests",
-        "//mojo/services/html_viewer:apptests",
       ]
     }
   }
 }