DevTools: introduce protocol::Value, baseline for hierarchical data in remote debugging protocol.

third_party/WebKit/Source/platform/v8_inspector/RemoteObjectId.h

 // Copyright 2015 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.
 
 #ifndef RemoteObjectId_h
 #define RemoteObjectId_h
 
 #include "wtf/Allocator.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
-class JSONObject;
+namespace protocol {
+class DictionaryValue;
+}
 
 class RemoteObjectIdBase {
     USING_FAST_MALLOC(RemoteObjectIdBase);
 public:
     int contextId() const { return m_injectedScriptId; }
 
 protected:
     RemoteObjectIdBase();
     ~RemoteObjectIdBase() { }
 
-    PassRefPtr<JSONObject> parseInjectedScriptId(const String&);
+    PassRefPtr<protocol::DictionaryValue> parseInjectedScriptId(const String&);
 
     int m_injectedScriptId;
 };
 
 class RemoteObjectId final : public RemoteObjectIdBase {
 public:
     static PassOwnPtr<RemoteObjectId> parse(const String&);
     ~RemoteObjectId() { }
     int id() const { return m_id; }
 
 private:
     RemoteObjectId();
 
     int m_id;
 };
 
 class RemoteCallFrameId final : public RemoteObjectIdBase {
 public:
     static PassOwnPtr<RemoteCallFrameId> parse(const String&);
     ~RemoteCallFrameId() { }
 
-    unsigned frameOrdinal() const { return m_frameOrdinal; }
-    unsigned asyncStackOrdinal() const { return m_asyncStackOrdinal; }
+    int frameOrdinal() const { return m_frameOrdinal; }
+    int asyncStackOrdinal() const { return m_asyncStackOrdinal; }
 
 private:
     RemoteCallFrameId();
 
-    unsigned m_frameOrdinal;
-    unsigned m_asyncStackOrdinal;
+    int m_frameOrdinal;
+    int m_asyncStackOrdinal;
 };
 
 } // namespace blink
 
 #endif // !defined(RemoteObjectId_h)