Cosmetic cleanup to texture_layer mailboxes.

cc/texture_mailbox.cc

Index: cc/texture_mailbox.cc
diff --git a/cc/texture_mailbox.cc b/cc/texture_mailbox.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8e6312f413ece9b14e012b37cd73d67ff6e07e45
--- /dev/null
+++ b/cc/texture_mailbox.cc
@@ -0,0 +1,41 @@
+// 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 "base/logging.h"
+#include "cc/texture_mailbox.h"
+
+namespace cc {
+
+TextureMailbox::TextureMailbox() {
+}
+
+TextureMailbox::TextureMailbox(
+    const std::string& mailbox_name,
+    const ReleaseCallback& mailbox_callback)
+    : name_(mailbox_name),
+      callback_(mailbox_callback) {
+  DCHECK(name_.empty() == callback_.is_null());
+}
+
+TextureMailbox::~TextureMailbox() {
+}
+
+bool TextureMailbox::Equals(const TextureMailbox& other) const {
+  return (name_.compare(other.name_) == 0);
+}
+
+const int8* TextureMailbox::Data() const {
+  return reinterpret_cast<const int8*>(name_.data());
+}
+
+bool TextureMailbox::IsEmpty() const {
+  return name_.empty();
+}
+
+void TextureMailbox::RunReleaseCallback(unsigned sync_point) const {
+  if (!callback_.is_null())
+    callback_.Run(sync_point);
+}
+
+}  // namespace cc