Add PPAPI_BEGIN_MESSAGE_MAP and PPAPI_END_MESSAGE_MAP to be used when dispatching IPCs using PPAPI_…

content/renderer/pepper/pepper_file_chooser_host.cc

Index: content/renderer/pepper/pepper_file_chooser_host.cc
===================================================================
--- content/renderer/pepper/pepper_file_chooser_host.cc	(revision 270145)
+++ content/renderer/pepper/pepper_file_chooser_host.cc	(working copy)
@@ -82,9 +82,9 @@
 int32_t PepperFileChooserHost::OnResourceMessageReceived(
     const IPC::Message& msg,
     ppapi::host::HostMessageContext* context) {
-  IPC_BEGIN_MESSAGE_MAP(PepperFileChooserHost, msg)
-  PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileChooser_Show, OnShow)
-  IPC_END_MESSAGE_MAP()
+  PPAPI_BEGIN_MESSAGE_MAP(PepperFileChooserHost, msg)
+    PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileChooser_Show, OnShow)
+  PPAPI_END_MESSAGE_MAP()
   return PP_ERROR_FAILED;
 }