Move the rest of the Flash functions to the thunk system.

ppapi/shared_impl/ppb_flash_shared.h

Index: ppapi/shared_impl/ppb_flash_shared.h
diff --git a/ppapi/shared_impl/ppb_flash_shared.h b/ppapi/shared_impl/ppb_flash_shared.h
index b7de3bd04dfbd05a1cd7ca7e55a964c9436885ba..dfd209da3d7730b769519ac4c39e7482c797590f 100644
--- a/ppapi/shared_impl/ppb_flash_shared.h
+++ b/ppapi/shared_impl/ppb_flash_shared.h
@@ -17,6 +17,10 @@ class PPAPI_SHARED_EXPORT PPB_Flash_Shared : public thunk::PPB_Flash_API {
   PPB_Flash_Shared();
   virtual ~PPB_Flash_Shared();
 
+  // Shared implementation of PPB_Flash_API.
+  virtual void FreeDirContents(PP_Instance instance,
+                               PP_DirContents_Dev* contents) OVERRIDE;
+
  protected:
   static bool IsValidClipboardType(PP_Flash_Clipboard_Type clipboard_type);
   static bool IsValidClipboardFormat(PP_Flash_Clipboard_Format format);