Adds option to run browser tests in mash

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
@@ skipping 1282 matching lines @@
     if (enable_remoting) {
       sources += rebase_path(
               chrome_tests_gypi_values.chrome_browser_tests_remoting_sources,
               ".",
               "//chrome")
       #deps += [ "//remoting:remoting_webapp" ]  TODO(GYP)
     }
     if (use_x11) {
       deps += [ "//tools/xdisplaycheck" ]
     }
+
+    if (use_aura) {
+      sources += [
+        "base/mash_browser_tests_main.cc",
+        "base/mash_browser_tests_main.h",
+        "base/mojo_test_connector.cc",
+        "base/mojo_test_connector.h",
+      ]
+
+      deps += [
+        "//mojo/shell/background:lib",
+        "//mojo/shell/background/tests:test_support",
+      ]
+
+      data_deps += [ "//mash/session" ]
+
+      defines += [ "MOJO_SHELL_CLIENT" ]
+    }
   }
 
   test("sync_integration_tests") {
     sources =
         rebase_path(chrome_tests_gypi_values.sync_integration_tests_sources,
                     ".",
                     "//chrome")
 
     data = [
       "//chrome/test/data/sync/",
@@ skipping 922 matching lines @@
 if (is_android) {
   android_library("unit_tests_java") {
     DEPRECATED_java_in_dir = "//chrome/test/android/unit_tests_apk/src"
     deps = [
       "//base:base_java",
       "//chrome/android:chrome_java",
       "//content/public/android:content_java",
     ]
   }
 }