Move fileapi into its own component

webkit/fileapi/file_system_callback_dispatcher.h

Index: webkit/fileapi/file_system_callback_dispatcher.h
diff --git a/webkit/fileapi/file_system_callback_dispatcher.h b/webkit/fileapi/file_system_callback_dispatcher.h
index a41c8dfacab6727bc6112453abb1c9344543f1a9..b9a70b0cbec477a7ebb35fd4a577b916a9390c42 100644
--- a/webkit/fileapi/file_system_callback_dispatcher.h
+++ b/webkit/fileapi/file_system_callback_dispatcher.h
@@ -11,6 +11,7 @@
 #include "base/file_util_proxy.h"
 #include "base/platform_file.h"
 #include "base/process.h"
+#include "webkit/fileapi/fileapi_export.h"
 
 class GURL;
 
@@ -19,7 +20,7 @@ namespace fileapi {
 // This class mirrors the callbacks in
 // third_party/WebKit/Source/WebKit/chromium/public/WebFileSystemCallbacks.h,
 // but uses chromium types.
-class FileSystemCallbackDispatcher {
+class FILEAPI_EXPORT FileSystemCallbackDispatcher {
  public:
   virtual ~FileSystemCallbackDispatcher();