Mac InfoBar: Use cross platform infobar classes

chrome/browser/ui/cocoa/infobars/infobar_cocoa.mm

+// 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.
+
+#include "chrome/browser/ui/cocoa/infobars/infobar_cocoa.h"
+
+const int InfoBar::kSeparatorLineHeight = 1;
+const int InfoBar::kDefaultArrowTargetHeight = 11;
+const int InfoBar::kMaximumArrowTargetHeight = 24;
+const int InfoBar::kDefaultArrowTargetHalfWidth = kDefaultArrowTargetHeight;
+const int InfoBar::kMaximumArrowTargetHalfWidth = 14;
+const int InfoBar::kDefaultBarTargetHeight = 36;
+
+InfoBarCocoa::InfoBarCocoa(InfoBarService* owner, InfoBarDelegate* delegate)
+    : InfoBar(owner, delegate) {
+}
+
+InfoBarCocoa::~InfoBarCocoa() {
+}
+
+void InfoBarCocoa::RemoveSelfCocoa() {
+  RemoveSelf();
+}
+
+InfoBarService* InfoBarCocoa::OwnerCocoa() {
+  return owner();
+}