Make most code on mac compile with enable_web_intents=0

chrome/browser/download/chrome_download_manager_delegate.h

Index: chrome/browser/download/chrome_download_manager_delegate.h
diff --git a/chrome/browser/download/chrome_download_manager_delegate.h b/chrome/browser/download/chrome_download_manager_delegate.h
index 60d065424abd01058862f78d9e69c32b39561301..93a6e28c30cd878ce1378e66bf78fbcd72ebc0f7 100644
--- a/chrome/browser/download/chrome_download_manager_delegate.h
+++ b/chrome/browser/download/chrome_download_manager_delegate.h
@@ -207,12 +207,14 @@ class ChromeDownloadManagerDelegate
       content::DownloadDangerType danger_type,
       const FilePath& target_path);
 
+#if defined(ENABLE_WEB_INTENTS)
   // Check policy of whether we should open this download with a web intents
   // dispatch.
   bool ShouldOpenWithWebIntents(const content::DownloadItem* item);
 
   // Open the given item with a web intent dispatch.
   void OpenWithWebIntent(const content::DownloadItem* item);
+#endif
 
   // Internal gateways for ShouldCompleteDownload().
   bool IsDownloadReadyForCompletion(