Move libplatform files into v8::platform namespace

src/libplatform/default-platform.cc

 // Copyright 2013 the V8 project 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 "src/libplatform/default-platform.h"
 
 #include <algorithm>
 #include <queue>
 
 #include "src/base/logging.h"
 #include "src/base/platform/platform.h"
 #include "src/libplatform/worker-thread.h"
 
 namespace v8 {
-namespace internal {
+namespace platform {
 
 
 const int DefaultPlatform::kMaxThreadPoolSize = 4;
 
 
 DefaultPlatform::DefaultPlatform()
     : initialized_(false), thread_pool_size_(0) {}
 
 
 DefaultPlatform::~DefaultPlatform() {
@@ skipping 33 matching lines @@
   queue_.Append(task);
 }
 
 
 void DefaultPlatform::CallOnForegroundThread(v8::Isolate* isolate, Task* task) {
   // TODO(jochen): implement.
   task->Run();
   delete task;
 }
 
-} }  // namespace v8::internal
+} }  // namespace v8::platform