prune down content_dll change to just the CONTENT_EXPORTS

content/browser/download/download_manager.h

Index: content/browser/download/download_manager.h
diff --git a/content/browser/download/download_manager.h b/content/browser/download/download_manager.h
index b08a1438191cdc90e1682073ec40d2f51e546fff..0f72615a5231843a3b1f36621838379fdc853097 100644
--- a/content/browser/download/download_manager.h
+++ b/content/browser/download/download_manager.h
@@ -46,6 +46,7 @@
 #include "content/browser/download/download_item.h"
 #include "content/browser/download/download_request_handle.h"
 #include "content/browser/download/download_status_updater_delegate.h"
+#include "content/common/content_export.h"
 
 class DownloadFileManager;
 class DownloadManagerDelegate;
@@ -61,7 +62,7 @@ class BrowserContext;
 }
 
 // Browser's download manager: manages all downloads and destination view.
-class DownloadManager
+class CONTENT_EXPORT DownloadManager
     : public base::RefCountedThreadSafe<DownloadManager,
                                         BrowserThread::DeleteOnUIThread>,
       public DownloadStatusUpdaterDelegate {
@@ -275,6 +276,8 @@ class DownloadManager
   friend class DownloadManagerTest;
   friend class MockDownloadManager;
 
+  friend base::RefCountedThreadSafe<DownloadManager,
+                                    BrowserThread::DeleteOnUIThread>;
   friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
   friend class DeleteTask<DownloadManager>;