Add missing #includes of <algorithm> in ppapi for std::min/max

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>
 
 #include "ppapi/cpp/core.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/tests/pp_thread.h"
 #include "ppapi/tests/test_utils.h"
 #include "ppapi/tests/testing_instance.h"
 
 namespace {
 
@@ skipping 237 matching lines @@
 void TestCase::RunOnThreadInternal(void (*thread_func)(void*),
                                    void* thread_param,
                                    const PPB_Testing_Dev* 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);
 }