Move services code brought in from Mojo to live under //third_party.

mojo/services/html_viewer/BUILD.gn

Index: mojo/services/html_viewer/BUILD.gn
diff --git a/mojo/services/html_viewer/BUILD.gn b/mojo/services/html_viewer/BUILD.gn
index 1d2c63dc90579957aceb1b0830aece73ae1d64d3..77d96569fd5fb79883a28ae0a097ea60384384b6 100644
--- a/mojo/services/html_viewer/BUILD.gn
+++ b/mojo/services/html_viewer/BUILD.gn
@@ -83,27 +83,27 @@ source_set("lib") {
     "//mojo/common",
     "//mojo/converters/surfaces",
     "//mojo/services/network/public/cpp",
-    "//mojo/services/accessibility/public/interfaces",
-    "//mojo/services/clipboard/public/interfaces",
-    "//mojo/services/content_handler/public/interfaces",
-    "//mojo/services/gpu/public/interfaces",
-    "//mojo/services/input_events/public/interfaces",
-    "//mojo/services/navigation/public/interfaces",
     "//mojo/services/network/public/interfaces",
-    "//mojo/services/surfaces/public/interfaces",
     "//net",
     "//skia",
     "//third_party/mojo/src/mojo/public/c/system:for_shared_library",
     "//third_party/mojo/src/mojo/public/cpp/utility",
     "//third_party/mojo/src/mojo/public/interfaces/application",
+    "//third_party/mojo_services/src/accessibility/public/interfaces",
+    "//third_party/mojo_services/src/clipboard/public/interfaces",
+    "//third_party/mojo_services/src/content_handler/public/interfaces",
+    "//third_party/mojo_services/src/gpu/public/interfaces",
+    "//third_party/mojo_services/src/input_events/public/interfaces",
+    "//third_party/mojo_services/src/navigation/public/interfaces",
+    "//third_party/mojo_services/src/surfaces/public/interfaces",
     "//ui/native_theme",
     "//url",
   ]
 
   public_deps = [
-    "//mojo/services/view_manager/public/cpp",
     "//third_party/WebKit/public:blink",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
+    "//third_party/mojo_services/src/view_manager/public/cpp",
     ":generate_blink_resource_map",
   ]
 }