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 {
+  ManifestPermission* clone = ManifestHandler::CreatePermission(name());

[not at google - send to devlin, 2014/07/18 22:02:18]

you could implement Clone() via Union with this, right? even though it's kind of
odd, it avoids you needing to make CreatePermission virtual and jump through
those testing hoops.

[aboxhall, 2014/07/18 22:38:16]

SGTM, done.

+  if (!clone->FromValue(ToValue().get()))
+    NOTREACHED() << "Could not convert back from Value";
+  return clone;
+}
+
+bool ManifestPermission::Contains(const ManifestPermission* rhs) const {
+  return Intersect(rhs)->Equal(rhs);

[not at google - send to devlin, 2014/07/18 22:02:18]

I think this is a leak, you need to wrap the result of Intersect in a
scoepd_ptr.

[aboxhall, 2014/07/18 22:38:16]

Done.

+}
+
+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::Write(ToValue().get(), log);
+}
+
 }  // namespace extensions