Fix browser tests on Mac

headless/test/headless_browser_test.cc

 // Copyright 2016 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.
 
 #include "headless/test/headless_browser_test.h"
 
 #include "base/files/file_path.h"
+#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
+#include "base/path_service.h"
 #include "base/run_loop.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "headless/lib/browser/headless_browser_impl.h"
 #include "headless/lib/browser/headless_web_contents_impl.h"
 #include "headless/lib/headless_content_main_delegate.h"
 #include "headless/public/devtools/domains/runtime.h"
 #include "headless/public/headless_devtools_client.h"
@@ skipping 94 matching lines @@
 
 void LoadObserver::OnResponseReceived(
     const network::ResponseReceivedParams& params) {
   if (params.GetResponse()->GetStatus() != 200 ||
       params.GetResponse()->GetUrl() == content::kUnreachableWebDataURL) {
     navigation_succeeded_ = false;
   }
 }
 
 HeadlessBrowserTest::HeadlessBrowserTest() {
+#if defined(OS_MACOSX)
+  // On Mac the source root is not set properly. We override it by assuming
+  // that is two directories up from the execution test file.
+  base::FilePath dir_exe_path;
+  CHECK(PathService::Get(base::DIR_EXE, &dir_exe_path));
+  dir_exe_path = dir_exe_path.Append("../../");
+  CHECK(PathService::Override(base::DIR_SOURCE_ROOT, dir_exe_path));
+#endif  // defined(OS_MACOSX)
   base::FilePath headless_test_data(FILE_PATH_LITERAL("headless/test/data"));
   CreateTestServer(headless_test_data);
 }
 
 HeadlessBrowserTest::~HeadlessBrowserTest() {}
 
 void HeadlessBrowserTest::SetUpOnMainThread() {}
 
 void HeadlessBrowserTest::TearDownOnMainThread() {
   browser()->Shutdown();
@@ skipping 98 matching lines @@
   web_contents_ = nullptr;
   browser_context_->Close();
   browser_context_ = nullptr;
 }
 
 ProtocolHandlerMap HeadlessAsyncDevTooledBrowserTest::GetProtocolHandlers() {
   return ProtocolHandlerMap();
 }
 
 }  // namespace headless