Fix breakages while performance_browser_tests was not running on Mac.

chrome/test/perf/mach_ports_performancetest.cc

 // 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.
 
 #include <mach/mach.h>
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/perf/perf_test.h"
 
 namespace {
 
 // This test spawns a new browser and counts the number of open Mach ports in
 // the browser process. It navigates tabs and closes them, repeatedly measuring
 // the number of open ports. This is used to protect against leaking Mach ports,
 // which was the source of <http://crbug.com/105513>.
 class MachPortsTest : public InProcessBrowserTest {
  public:
   MachPortsTest() {
-    server_.ServeFilesFromSourceDirectory("data/mach_ports/moz");
+    embedded_test_server()->ServeFilesFromSourceDirectory(
+        "data/mach_ports/moz");
   }
 
-  void SetUp() override {
-    InProcessBrowserTest::SetUp();
-
-    ASSERT_TRUE(server_.Start());
+  void SetUpOnMainThread() override {
+    InProcessBrowserTest::SetUpOnMainThread();
+    ASSERT_TRUE(embedded_test_server()->Start());
   }
 
   void TearDown() override {
     std::string ports;
     for (std::vector<int>::iterator it = port_counts_.begin();
          it != port_counts_.end(); ++it) {
       base::StringAppendF(&ports, "%d,", *it);
     }
     perf_test::PrintResultList("mach_ports", "", "", ports, "ports", true);
 
@@ skipping 20 matching lines @@
     port_counts_.push_back(names_count);
 
     vm_deallocate(self, reinterpret_cast<vm_address_t>(names),
         names_count * sizeof(mach_port_name_array_t));
     vm_deallocate(self, reinterpret_cast<vm_address_t>(types),
         types_count * sizeof(mach_port_type_array_t));
   }
 
   // Adds a tab from the page cycler data at the specified domain.
   void AddTab(const std::string& domain) {
-    GURL url = server_.GetURL("/" + domain + "/").Resolve("?skip");
-    AddTabAtIndex(0, url, ui::PAGE_TRANSITION_TYPED);
+    AddTabAtIndex(
+        0, embedded_test_server()->GetURL("/" + domain + "/").Resolve("?skip"),
+        ui::PAGE_TRANSITION_TYPED);
   }
 
  private:
-  net::EmbeddedTestServer server_;
   std::vector<int> port_counts_;
 };
 
 IN_PROC_BROWSER_TEST_F(MachPortsTest, GetCounts) {
   browser()->window()->Show();
 
   // Record startup number.
   RecordPortCount();
 
   // Create a browser and open a few tabs.
@@ skipping 13 matching lines @@
   // Close each tab, recording the number of ports after each. Do not close the
   // last tab, which is about:blank.
   for (int i = 0; i < tab_count - 1; ++i) {
     EXPECT_TRUE(
         tab_strip_model->CloseWebContentsAt(0, TabStripModel::CLOSE_NONE));
     RecordPortCount();
   }
 }
 
 }  // namespace