Split infobar_delegate.[cc,h] into separate pieces for the different classes defined within, so that

chrome/browser/tab_contents/simple_alert_infobar_delegate.cc

+// Copyright (c) 2011 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/tab_contents/simple_alert_infobar_delegate.h"
+
+#include "content/browser/tab_contents/tab_contents.h"
+#include "content/browser/tab_contents/navigation_controller.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+
+SimpleAlertInfoBarDelegate::SimpleAlertInfoBarDelegate(
+    TabContents* contents,
+    SkBitmap* icon,
+    const string16& message,
+    bool auto_expire)
+    : ConfirmInfoBarDelegate(contents),
+      icon_(icon),
+      message_(message),
+      auto_expire_(auto_expire) {
+}
+
+SimpleAlertInfoBarDelegate::~SimpleAlertInfoBarDelegate() {
+}
+
+bool SimpleAlertInfoBarDelegate::ShouldExpire(
+      const NavigationController::LoadCommittedDetails& details) const {
+  return auto_expire_ && ConfirmInfoBarDelegate::ShouldExpire(details);
+}
+
+void SimpleAlertInfoBarDelegate::InfoBarClosed() {
+  delete this;
+}
+
+SkBitmap* SimpleAlertInfoBarDelegate::GetIcon() const {
+  return icon_;
+}
+
+string16 SimpleAlertInfoBarDelegate::GetMessageText() const {
+  return message_;
+}
+
+int SimpleAlertInfoBarDelegate::GetButtons() const {
+  return BUTTON_NONE;
+}