Adds support for mojo apps to live in their own directory

mojo/shell/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")
 import("//third_party/mojo/src/mojo/public/mojo.gni")
 import("//third_party/mojo/src/mojo/public/mojo_application.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
@@ skipping 77 matching lines @@
 }
 
 source_set("lib") {
   sources = [
     "child_process.cc",
     "child_process.h",
     "child_process_host.cc",
     "child_process_host.h",
     "context.cc",
     "context.h",
-    "filename_util.cc",
-    "filename_util.h",
     "init.cc",
     "init.h",
     "out_of_process_native_runner.cc",
     "out_of_process_native_runner.h",
     "task_runners.cc",
     "task_runners.h",
     "url_resolver.cc",
     "url_resolver.h",
   ]
 
@@ skipping 11 matching lines @@
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/interfaces/application",
     "//mojo/services/network/public/interfaces",
     "//mojo/shell/application_manager",
     "//mojo/services/tracing:bindings",
     "//ui/gl",
     "//url",
   ]
 
   public_deps = [
-    ":switches",
+    ":common",
   ]
 
   if (is_android) {
     sources += [
       "android/android_handler.cc",
       "android/android_handler.h",
       "android/android_handler_loader.cc",
       "android/android_handler_loader.h",
       "android/background_application_loader.cc",
       "android/background_application_loader.h",
@@ skipping 38 matching lines @@
 
   # This target has to include the public thunk headers, which generally
   # shouldn't be included without picking an implementation. We are providing
   # the implementation but the thunk header target cannot declare that we are
   # permitted to include it since it's in the public SDK and we are not.
   # Suppress include checking so we can still check the rest of the targets in
   # this file.
   check_includes = false
 }
 
-source_set("switches") {
+source_set("common") {
   sources = [
+    "filename_util.cc",
+    "filename_util.h",
     "switches.cc",
     "switches.h",
   ]
 
   deps = [
     "//base",
   ]
 }
 
 if (is_android) {
@@ skipping 202 matching lines @@
     "//third_party/mojo/src/mojo/public/cpp/system:system",
 
     #"//mojo/services/http_server/public/cpp",
     #"//mojo/services/http_server/public/interfaces",
     "//mojo/services/network/public/interfaces",
     "//mojo/shell/test:bindings",
   ]
 
   #data_deps = [ "//services/http_server:http_server($default_toolchain)" ]
 }