Move TabContentsDragWin to content and rename it to WebContentsDragWin.

content/browser/download/drag_download_util.h

Index: content/browser/download/drag_download_util.h
===================================================================
--- content/browser/download/drag_download_util.h	(revision 124924)
+++ content/browser/download/drag_download_util.h	(working copy)
@@ -10,7 +10,6 @@
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "content/browser/download/drag_download_file.h"
-#include "content/common/content_export.h"
 #include "ui/base/dragdrop/download_file_interface.h"
 
 class FilePath;
@@ -30,20 +29,20 @@
 // appropriately.
 // For example, we can have
 //   text/plain:example.txt:http://example.com/example.txt
-CONTENT_EXPORT bool ParseDownloadMetadata(const string16& metadata,
-                                          string16* mime_type,
-                                          FilePath* file_name,
-                                          GURL* url);
+bool ParseDownloadMetadata(const string16& metadata,
+                           string16* mime_type,
+                           FilePath* file_name,
+                           GURL* url);
 
 // Create a new file at the specified path. If the file already exists, try to
 // insert the sequential unifier to produce a new file, like foo-01.txt.
 // Return a FileStream if successful.
 // |net_log| is a NetLog for the stream.
-CONTENT_EXPORT net::FileStream* CreateFileStreamForDrop(
+net::FileStream* CreateFileStreamForDrop(
     FilePath* file_path, net::NetLog* net_log);
 
 // Implementation of DownloadFileObserver to finalize the download process.
-class CONTENT_EXPORT PromiseFileFinalizer : public ui::DownloadFileObserver {
+class PromiseFileFinalizer : public ui::DownloadFileObserver {
  public:
   explicit PromiseFileFinalizer(DragDownloadFile* drag_file_downloader);
   virtual ~PromiseFileFinalizer();