V8ValueConverter for the activity logger that does not invoke interceptors and

chrome/renderer/extensions/activity_log_converter_strategy.h

+// Copyright (c) 2013 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 CHROME_RENDERER_EXTENSIONS_ACTIVITY_LOG_CONVERTER_STRATEGY_H_
+#define CHROME_RENDERER_EXTENSIONS_ACTIVITY_LOG_CONVERTER_STRATEGY_H_
+
+#include "base/compiler_specific.h"
+#include "content/public/renderer/v8_value_converter.h"
+#include "v8/include/v8.h"
+
+namespace extensions {
+
+// This class is used by activity logger and extends behavior of
+// V8ValueConverter. It overwrites conversion of V8 arrays and objects.  When
+// converting arrays and objects, we must not invoke any JS code which may
+// result in triggering activity logger. In such case, the log entries will be
+// generated due to V8 object conversion rather than extension activity.
+class ActivityLogConverterStrategy
+    : public content::V8ValueConverter::Strategy {
+ public:
+  virtual ~ActivityLogConverterStrategy() {}
+
+  virtual bool FromV8Object(v8::Handle<v8::Object> value,
+                            base::Value** out) const OVERRIDE;
+  virtual bool FromV8Array(v8::Handle<v8::Array> value,
+                           base::Value** out) const OVERRIDE;
+
+ private:
+  bool FromV8ObjectInternal(v8::Handle<v8::Object> value,
+                            base::Value** out) const;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_RENDERER_EXTENSIONS_ACTIVITY_LOG_CONVERTER_STRATEGY_H_