Allow writing browser_tests that involve a restart. The way to do this:

chrome/browser/prefs/pref_service_browsertest.cc

 // Copyright (c) 2012 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 <string>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/test/test_file_util.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/browser_window_state.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "ui/gfx/rect.h"
 
+typedef InProcessBrowserTest PreservedWindowPlacement;
+
+IN_PROC_BROWSER_TEST_F(PreservedWindowPlacement, PRE_Test) {
+  browser()->window()->SetBounds(gfx::Rect(10, 20, 300, 400));
+}
+
+IN_PROC_BROWSER_TEST_F(PreservedWindowPlacement, Test) {
+  gfx::Rect bounds;
+  bounds = browser()->window()->GetRestoredBounds();
+
+  gfx::Rect expected_bounds(gfx::Rect(10, 20, 300, 400));
+  ASSERT_EQ(expected_bounds, bounds);
+}
+
 class PreferenceServiceTest : public InProcessBrowserTest {
  public:
   explicit PreferenceServiceTest(bool new_profile) : new_profile_(new_profile) {
   }
 
   virtual bool SetUpUserDataDirectory() OVERRIDE {
     FilePath user_data_directory;
     PathService::Get(chrome::DIR_USER_DATA, &user_data_directory);
 
     FilePath reference_pref_file;
@@ skipping 146 matching lines @@
 
   // Find if launched window is maximized.
   bool is_window_maximized =
       chrome::GetSavedWindowShowState(browser()) == ui::SHOW_STATE_MAXIMIZED;
   bool is_maximized = false;
   EXPECT_TRUE(root_dict->GetBoolean(kBrowserWindowPlacement + ".maximized",
       &is_maximized));
   EXPECT_EQ(is_maximized, is_window_maximized);
 }
 #endif