Move platform abstraction to base library

src/debug.h

 // Copyright 2012 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_DEBUG_H_
 #define V8_DEBUG_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/assembler.h"
+#include "src/base/platform/platform.h"
 #include "src/execution.h"
 #include "src/factory.h"
 #include "src/flags.h"
 #include "src/frames-inl.h"
 #include "src/hashmap.h"
 #include "src/liveedit.h"
-#include "src/platform.h"
 #include "src/string-stream.h"
 #include "src/v8threads.h"
 
 #include "include/v8-debug.h"
 
 namespace v8 {
 namespace internal {
 
 
 // Forward declarations.
@@ skipping 293 matching lines @@
 class LockingCommandMessageQueue BASE_EMBEDDED {
  public:
   LockingCommandMessageQueue(Logger* logger, int size);
   bool IsEmpty() const;
   CommandMessage Get();
   void Put(const CommandMessage& message);
   void Clear();
  private:
   Logger* logger_;
   CommandMessageQueue queue_;
-  mutable Mutex mutex_;
+  mutable base::Mutex mutex_;
   DISALLOW_COPY_AND_ASSIGN(LockingCommandMessageQueue);
 };
 
 
 class PromiseOnStack {
  public:
   PromiseOnStack(Isolate* isolate,
                  PromiseOnStack* prev,
                  Handle<JSFunction> getter);
   ~PromiseOnStack();
@@ skipping 232 matching lines @@
   void ThreadInit();
 
   // Global handles.
   Handle<Context> debug_context_;
   Handle<Object> event_listener_;
   Handle<Object> event_listener_data_;
 
   v8::Debug::MessageHandler message_handler_;
 
   static const int kQueueInitialSize = 4;
-  Semaphore command_received_;  // Signaled for each command received.
+  base::Semaphore command_received_;  // Signaled for each command received.
   LockingCommandMessageQueue command_queue_;
   LockingCommandMessageQueue event_command_queue_;
 
   bool is_active_;
   bool is_suppressed_;
   bool live_edit_enabled_;
   bool has_break_points_;
   bool break_disabled_;
   bool break_on_exception_;
   bool break_on_uncaught_exception_;
@@ skipping 159 matching lines @@
   // several frames above.
   // There is no calling conventions here, because it never actually gets
   // called, it only gets returned to.
   static void GenerateFrameDropperLiveEdit(MacroAssembler* masm);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEBUG_H_