Upgrade to 3.29

Update V8 to 3.29.88.17 and update makefiles to support building on
all the relevant platforms.

Bug: 17370214

Change-Id: Ia3407c157fd8d72a93e23d8318ccaf6ecf77fa4e
diff --git a/src/libplatform/default-platform.h b/src/libplatform/default-platform.h
new file mode 100644
index 0000000..1efd7b2
--- /dev/null
+++ b/src/libplatform/default-platform.h
@@ -0,0 +1,58 @@
+// 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.
+
+#ifndef V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
+#define V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
+
+#include <map>
+#include <queue>
+#include <vector>
+
+#include "include/v8-platform.h"
+#include "src/base/macros.h"
+#include "src/base/platform/mutex.h"
+#include "src/libplatform/task-queue.h"
+
+namespace v8 {
+namespace platform {
+
+class TaskQueue;
+class Thread;
+class WorkerThread;
+
+class DefaultPlatform : public Platform {
+ public:
+  DefaultPlatform();
+  virtual ~DefaultPlatform();
+
+  void SetThreadPoolSize(int thread_pool_size);
+
+  void EnsureInitialized();
+
+  bool PumpMessageLoop(v8::Isolate* isolate);
+
+  // v8::Platform implementation.
+  virtual void CallOnBackgroundThread(
+      Task* task, ExpectedRuntime expected_runtime) OVERRIDE;
+  virtual void CallOnForegroundThread(v8::Isolate* isolate,
+                                      Task* task) OVERRIDE;
+
+ private:
+  static const int kMaxThreadPoolSize;
+
+  base::Mutex lock_;
+  bool initialized_;
+  int thread_pool_size_;
+  std::vector<WorkerThread*> thread_pool_;
+  TaskQueue queue_;
+  std::map<v8::Isolate*, std::queue<Task*> > main_thread_queue_;
+
+  DISALLOW_COPY_AND_ASSIGN(DefaultPlatform);
+};
+
+
+} }  // namespace v8::platform
+
+
+#endif  // V8_LIBPLATFORM_DEFAULT_PLATFORM_H_