More style nits.

chrome/browser/printing/print_dialog_gtk.cc

 // Copyright (c) 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 "chrome/browser/printing/print_dialog_gtk.h"
 
 #include <gtk/gtkprintjob.h>
 #include <gtk/gtkprintunixdialog.h>
 #include <gtk/gtkpagesetupunixdialog.h>
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 
 namespace {
 
 // This is a temporary infobar designed to help gauge how many users are trying
 // to print to printers that don't support PDF.
 class PdfUnsupportedInfoBarDelegate : public LinkInfoBarDelegate {
  public:
-  PdfUnsupportedInfoBarDelegate(Browser* browser)
+  explicit PdfUnsupportedInfoBarDelegate(Browser* browser)
      : LinkInfoBarDelegate(NULL),
        browser_(browser) {
   }
 
   ~PdfUnsupportedInfoBarDelegate() {}
 
   virtual std::wstring GetMessageTextWithOffset(size_t* link_offset) const {
     std::wstring message(L"Oops! Your printer does not support PDF. Please "
                          L"report this to us .");
     *link_offset = message.length() - 1;
@@ skipping 97 matching lines @@
   if (error)
     LOG(ERROR) << "Printing failed: " << error->message;
 
   if (job)
     g_object_unref(job);
 
   file_util::Delete(path_to_pdf_, false);
 
   delete this;
 }