[headless] Fix window management browsertests on Mac.

headless/lib/headless_devtools_client_browsertest.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 <memory>
 
 #include "base/json/json_reader.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "content/public/browser/render_widget_host_view.h"
@@ skipping 128 matching lines @@
 
     browser_devtools_client_->GetBrowser()->GetExperimental()->GetWindowBounds(
         std::move(params), callback);
   }
 
   void CheckWindowBounds(
       const gfx::Rect& bounds,
       const browser::WindowState state,
       std::unique_ptr<browser::GetWindowBoundsResult> result) {
     const headless::browser::Bounds* actual_bounds = result->GetBounds();
+// https://crbug.com/726288: Mac does not currently support repositioning.
+#if !defined(OS_MACOSX)
     EXPECT_EQ(bounds.x(), actual_bounds->GetLeft());
     EXPECT_EQ(bounds.y(), actual_bounds->GetTop());
+#endif  // !defined(OS_MACOSX)
     EXPECT_EQ(bounds.width(), actual_bounds->GetWidth());
     EXPECT_EQ(bounds.height(), actual_bounds->GetHeight());
     EXPECT_EQ(state, actual_bounds->GetWindowState());
   }
 };
 
 class HeadlessDevToolsClientChangeWindowBoundsTest
     : public HeadlessDevToolsClientWindowManagementTest {
   void RunDevTooledTest() override {
     SetWindowBounds(
@@ skipping 1035 matching lines @@
   }
 
  private:
   bool dev_tools_client_attached_ = false;
   bool dev_tools_client_detached_ = false;
 };
 
 HEADLESS_ASYNC_DEVTOOLED_TEST_F(DevToolsAttachAndDetachNotifications);
 
 }  // namespace headless