Make Clone, Contains, Equal and IPC function non-virtual and implement in manifest_permission.cc

extensions/common/permissions/manifest_permission.cc

 // Copyright 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.
 
 #include "extensions/common/permissions/manifest_permission.h"
 
+#include "base/json/json_writer.h"
+#include "extensions/common/manifest_handler.h"
+#include "ipc/ipc_message.h"
+#include "ipc/ipc_message_utils.h"
+
 namespace extensions {
 
 ManifestPermission::ManifestPermission() {}
 
 ManifestPermission::~ManifestPermission() { }
 
+ManifestPermission* ManifestPermission::Clone() const {
+  return Union(this);
+}
+
+bool ManifestPermission::Contains(const ManifestPermission* rhs) const {
+  return scoped_ptr<ManifestPermission>(Intersect(rhs))->Equal(rhs);
+}
+
+bool ManifestPermission::Equal(const ManifestPermission* rhs) const {
+  return ToValue()->Equals(rhs->ToValue().get());
+}
+
+void ManifestPermission::Write(IPC::Message* m) const {
+  base::ListValue singleton;
+  base::Value* value = ToValue().release();
+  singleton.Append(value);
+  IPC::WriteParam(m, singleton);
+}
+
+bool ManifestPermission::Read(const IPC::Message* m, PickleIterator* iter) {
+  base::ListValue singleton;
+  if (!IPC::ReadParam(m, iter, &singleton))
+    return false;
+  if (singleton.GetSize() != 1)
+    return false;
+  base::Value* value = NULL;
+  if (!singleton.Get(0, &value))
+    return false;
+  return FromValue(value);
+}
+
+void ManifestPermission::Log(std::string* log) const {
+  base::JSONWriter::WriteWithOptions(
+      ToValue().get(), base::JSONWriter::OPTIONS_PRETTY_PRINT, log);
+}
+
 }  // namespace extensions