Remove IS_IOS checks in chrome/

chrome/browser/download/download_commands.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_COMMANDS_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_COMMANDS_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
@@ skipping 24 matching lines @@
   explicit DownloadCommands(content::DownloadItem* download_item);
   virtual ~DownloadCommands() {}
 
   gfx::Image GetCommandIcon(Command command);
 
   bool IsCommandEnabled(Command command) const;
   bool IsCommandChecked(Command command) const;
   bool IsCommandVisible(Command command) const;
   void ExecuteCommand(Command command);
 
-#if defined(OS_WIN) || defined(OS_LINUX) || \
-    (defined(OS_MACOSX) && !defined(OS_IOS))
+#if defined(OS_WIN) || defined(OS_LINUX) || defined(OS_MACOSX)
   bool IsDownloadPdf() const;
   bool CanOpenPdfInSystemViewer() const;
 #endif
 
  private:
   FRIEND_TEST_ALL_PREFIXES(
       DownloadCommandsTest,
       GetLearnMoreURLForInterruptedDownload_ContainsContext);
 
   Browser* GetBrowser() const;
   int GetCommandIconId(Command command) const;
   GURL GetLearnMoreURLForInterruptedDownload() const;
   void CopyFileAsImageToClipboard() const;
 
   content::DownloadItem* const download_item_;
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_COMMANDS_H_