Simplify print preview system dialog message

chrome/browser/ui/webui/print_preview/print_preview_ui.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 "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
 
 #include <map>
 #include <vector>
 
 #include "base/feature_list.h"
@@ skipping 42 matching lines @@
 #endif
 
 using content::WebContents;
 using printing::PageSizeMargins;
 
 namespace {
 
 #if defined(OS_MACOSX)
 // U+0028 U+21E7 U+2318 U+0050 U+0029 in UTF8
 const char kBasicPrintShortcut[] = "\x28\xE2\x8c\xA5\xE2\x8C\x98\x50\x29";
-#elif defined(OS_WIN) || defined(OS_CHROMEOS)
+#else
 const char kBasicPrintShortcut[] = "(Ctrl+Shift+P)";
-#else
-const char kBasicPrintShortcut[] = "(Shift+Ctrl+P)";
 #endif
 
 // Thread-safe wrapper around a std::map to keep track of mappings from
 // PrintPreviewUI IDs to most recent print preview request IDs.
 class PrintPreviewRequestIdMapWithLock {
  public:
   PrintPreviewRequestIdMapWithLock() {}
   ~PrintPreviewRequestIdMapWithLock() {}
 
   // Gets the value for |preview_id|.
@@ skipping 606 matching lines @@
 }
 
 void PrintPreviewUI::SetSelectedFileForTesting(const base::FilePath& path) {
   handler_->FileSelected(path, 0, NULL);
 }
 
 void PrintPreviewUI::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   handler_->SetPdfSavedClosureForTesting(closure);
 }