Change NaCl IPC PPAPI proxy startup to support a NaCl-Browser process

ppapi/proxy/ppapi_param_traits.cc

Index: ppapi/proxy/ppapi_param_traits.cc
===================================================================
--- ppapi/proxy/ppapi_param_traits.cc	(revision 154143)
+++ ppapi/proxy/ppapi_param_traits.cc	(working copy)
@@ -323,6 +323,7 @@
       ParamTraits<base::SharedMemoryHandle>::Write(m, p.shmem());
       break;
     case ppapi::proxy::SerializedHandle::SOCKET:
+    case ppapi::proxy::SerializedHandle::CHANNEL_HANDLE:
       ParamTraits<IPC::PlatformFileForTransit>::Write(m, p.descriptor());
       break;
     case ppapi::proxy::SerializedHandle::INVALID:
@@ -355,6 +356,14 @@
       }
       break;
     }
+    case ppapi::proxy::SerializedHandle::CHANNEL_HANDLE: {
+      IPC::PlatformFileForTransit desc;
+      if (ParamTraits<IPC::PlatformFileForTransit>::Read(m, iter, &desc)) {
+        r->set_channel_handle(desc);
+        return true;
+      }
+      break;
+    }
     case ppapi::proxy::SerializedHandle::INVALID:
       return true;
     // No default so the compiler will warn us if a new type is added.