[Pepper] Wire up append mode writing support of FileIO

content/browser/renderer_host/pepper/pepper_file_io_host.h

Index: content/browser/renderer_host/pepper/pepper_file_io_host.h
diff --git a/content/browser/renderer_host/pepper/pepper_file_io_host.h b/content/browser/renderer_host/pepper/pepper_file_io_host.h
index 76991a923dd942887e8263a3c88054a14925f89a..45953c995f082dd9d01b94f869e80e5a8a1842c1 100644
--- a/content/browser/renderer_host/pepper/pepper_file_io_host.h
+++ b/content/browser/renderer_host/pepper/pepper_file_io_host.h
@@ -23,6 +23,10 @@
 #include "url/gurl.h"
 #include "webkit/browser/fileapi/file_system_context.h"
 
+namespace ppapi {
+struct FileGrowth;
+}
+
 namespace content {
 class PepperFileSystemBrowserHost;
 
@@ -58,7 +62,7 @@ class PepperFileIOHost : public ppapi::host::ResourceHost,
   int32_t OnHostMsgSetLength(ppapi::host::HostMessageContext* context,
                              int64_t length);
   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context,
-                         int64_t max_written_offset);
+                         const ppapi::FileGrowth& file_growth);
   int32_t OnHostMsgFlush(ppapi::host::HostMessageContext* context);
   int32_t OnHostMsgRequestOSFileHandle(
       ppapi::host::HostMessageContext* context);