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

chrome/browser/tab_contents/link_infobar_delegate.h

Index: chrome/browser/tab_contents/link_infobar_delegate.h
diff --git a/chrome/browser/tab_contents/link_infobar_delegate.h b/chrome/browser/tab_contents/link_infobar_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..8be8cb08e414fc3c0be3ebf9d6eb6626fdb2494e
--- /dev/null
+++ b/chrome/browser/tab_contents/link_infobar_delegate.h
@@ -0,0 +1,46 @@
+// 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_LINK_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_TAB_CONTENTS_LINK_INFOBAR_DELEGATE_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/string16.h"
+#include "content/browser/tab_contents/infobar_delegate.h"
+
+class TabContents;
+
+// An interface derived from InfoBarDelegate implemented by objects wishing to
+// control a LinkInfoBar.
+class LinkInfoBarDelegate : public InfoBarDelegate {
+ public:
+  // Returns the message string to be displayed in the InfoBar. |link_offset|
+  // is the position where the link should be inserted.
+  virtual string16 GetMessageTextWithOffset(size_t* link_offset) const = 0;
+
+  // Returns the text of the link to be displayed.
+  virtual string16 GetLinkText() const = 0;
+
+  // Called when the Link is clicked. The |disposition| specifies how the
+  // resulting document should be loaded (based on the event flags present when
+  // the link was clicked). This function returns true if the InfoBar should be
+  // closed now or false if it should remain until the user explicitly closes
+  // it.
+  virtual bool LinkClicked(WindowOpenDisposition disposition);
+
+ protected:
+  explicit LinkInfoBarDelegate(TabContents* contents);
+  virtual ~LinkInfoBarDelegate();
+
+ private:
+  // InfoBarDelegate:
+  virtual InfoBar* CreateInfoBar() OVERRIDE;
+  virtual LinkInfoBarDelegate* AsLinkInfoBarDelegate() OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(LinkInfoBarDelegate);
+};
+
+#endif  // CHROME_BROWSER_TAB_CONTENTS_LINK_INFOBAR_DELEGATE_H_