ppapi_proxy: Make DebugPrintf more usable....

src/shared/ppapi_proxy/browser_upcall.cc

 // Copyright (c) 2010 The Native Client Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "native_client/src/shared/ppapi_proxy/browser_upcall.h"
 
 #include <new>
 
 #include "srpcgen/upcall.h"
 #include "native_client/src/include/portability.h"
@@ skipping 33 matching lines @@
 // Plugin-side calls to CallOnMainThread are sent as RPCs to the
 // browser.  The browser responds to the RPC by putting the following thunk on
 // the the browser's message queue.  The browser will call it back on the
 // browser's NPAPI thread, so it is safe to invoke an NPNavigatorRpc interface
 // from here.
 static void CallOnMainThreadThunk(void* arg, int32_t res) {
   nacl::scoped_ptr<UserData> closure(reinterpret_cast<UserData*>(arg));
   UNREFERENCED_PARAMETER(res);
   if (closure != NULL) {
     // TODO(sehr): Send an RPC back to the NaCl module to run it's closure.
-    ppapi_proxy::DebugPrintf("Closure run was invoked!\n");
+    ppapi_proxy::DebugPrintf("Browser::CallOnMainThread: "
+                             "closure run was invoked!\n");
   }
 }
 
 // Structure for passing information to the thread.  Shares ownership of
 // the descriptor with the creating routine.  This allows passing ownership
 // to the upcall thread.
 class UpcallInfo {
  public:
   UpcallInfo(DescWrapper* wrapper, NaClSrpcChannel* channel) {
     wrapper_ = wrapper;
@@ skipping 85 matching lines @@
                                               int64_t device_context,
                                               int32_t callback_index,
                                               int32_t* result) {
   NaClSrpcClosureRunner runner(done);
   rpc->result = NACL_SRPC_RESULT_APP_ERROR;
   UNREFERENCED_PARAMETER(device_context);
   UNREFERENCED_PARAMETER(callback_index);
   UNREFERENCED_PARAMETER(result);
   NACL_UNIMPLEMENTED();
 }