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

chrome/browser/tab_contents/simple_alert_infobar_delegate.h

Index: chrome/browser/tab_contents/simple_alert_infobar_delegate.h
diff --git a/chrome/browser/tab_contents/simple_alert_infobar_delegate.h b/chrome/browser/tab_contents/simple_alert_infobar_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..5a696d4cbf66fb24eafc1cbdcc6f063190ae4dd8
--- /dev/null
+++ b/chrome/browser/tab_contents/simple_alert_infobar_delegate.h
@@ -0,0 +1,42 @@
+// 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.
+
+#ifndef CHROME_BROWSER_TAB_CONTENTS_SIMPLE_ALERT_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_TAB_CONTENTS_SIMPLE_ALERT_INFOBAR_DELEGATE_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/string16.h"
+#include "chrome/browser/tab_contents/confirm_infobar_delegate.h"
+
+class SkBitmap;
+class TabContents;
+
+class SimpleAlertInfoBarDelegate : public ConfirmInfoBarDelegate {
+ public:
+  SimpleAlertInfoBarDelegate(TabContents* contents,
+                             SkBitmap* icon,  // May be NULL.
+                             const string16& message,
+                             bool auto_expire);
+
+ private:
+  virtual ~SimpleAlertInfoBarDelegate();
+
+  // ConfirmInfoBarDelegate:
+  virtual bool ShouldExpire(
+      const NavigationController::LoadCommittedDetails& details) const OVERRIDE;
+  virtual void InfoBarClosed() OVERRIDE;
+  virtual SkBitmap* GetIcon() const OVERRIDE;
+  virtual string16 GetMessageText() const OVERRIDE;
+  virtual int GetButtons() const OVERRIDE;
+
+  SkBitmap* icon_;
+  string16 message_;
+  bool auto_expire_;  // Should it expire automatically on navigation?
+
+  DISALLOW_COPY_AND_ASSIGN(SimpleAlertInfoBarDelegate);
+};
+
+#endif  // CHROME_BROWSER_TAB_CONTENTS_SIMPLE_ALERT_INFOBAR_DELEGATE_H_