More style nits.

chrome/browser/printing/printing_layout_uitest.cc

 // Copyright (c) 2006-2009 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 "app/gfx/gdi_util.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/simple_thread.h"
 #include "base/win_util.h"
 #include "chrome/common/chrome_paths.h"
@@ skipping 244 matching lines @@
       WM_COMMAND,
       print_button_id,
       reinterpret_cast<LPARAM>(GetDlgItem(dialog_window, print_button_id)));
   return res == 0;
 }
 
 // Dismiss the first dialog box owned by owner_process by "executing" the
 // default button.
 class DismissTheWindow : public base::DelegateSimpleThread::Delegate {
  public:
-  DismissTheWindow(DWORD owner_process)
+  explicit DismissTheWindow(DWORD owner_process)
       : owner_process_(owner_process) {
   }
 
   virtual void Run() {
     HWND dialog_window;
     for (;;) {
       // First enumerate the windows.
       dialog_window = FindDialogWindow(owner_process_);
 
       // Try to close it.
@@ skipping 167 matching lines @@
 
     // Force a navigation elsewhere to verify that it's fine with it.
     url = server->TestServerPage("files/printing/test1.html");
     EXPECT_EQ(AUTOMATION_MSG_NAVIGATION_SUCCESS,
               tab_proxy->NavigateToURL(url));
   }
   CloseBrowserAndServer();
 
   EXPECT_EQ(0., CompareWithResult(L"iframe")) << L"iframe";
 }