Remove an out of date comment in PPAPI code.

ppapi/tests/test_case.cc

 // Copyright (c) 2012 The Chromium 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 "ppapi/tests/test_case.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <sstream>
@@ skipping 82 matching lines @@
 }
 
 bool TestCase::Init() {
   return true;
 }
 
 // static
 std::string TestCase::MakeFailureMessage(const char* file,
                                          int line,
                                          const char* cmd) {
-  // The mere presence of this local variable works around a gcc-4.2.4
-  // compiler bug in official Chrome Linux builds.  If you remove it,
-  // confirm this compile command still works:
-  // GYP_DEFINES='branding=Chrome buildtype=Official target_arch=x64'
-  //     gclient runhooks
-  // make -k -j4 BUILDTYPE=Release ppapi_tests
-
   std::ostringstream output;
   output << "Failure in " << file << "(" << line << "): " << cmd;
   return output.str();
 }
 
 #if !(defined __native_client__)
 pp::VarPrivate TestCase::GetTestObject() {
   if (test_object_.is_undefined()) {
     pp::deprecated::ScriptableObject* so = CreateTestObject();
     if (so) {
@@ skipping 138 matching lines @@
     void (*thread_func)(void*),
     void* thread_param,
     const PPB_Testing_Private* testing_interface) {
   PP_ThreadType thread;
   PP_CreateThread(&thread, thread_func, thread_param);
   // Run a message loop so pepper calls can be dispatched. The background
   // thread will set result_ and make us Quit when it's done.
   testing_interface->RunMessageLoop(instance_->pp_instance());
   PP_JoinThread(thread);
 }