Remove PinnedContentsInfoBubble which doesn't look like it is used.

chrome/browser/ui/views/pinned_contents_info_bubble.h

-// 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_UI_VIEWS_PINNED_CONTENTS_INFO_BUBBLE_H_
-#define CHROME_BROWSER_UI_VIEWS_PINNED_CONTENTS_INFO_BUBBLE_H_
-#pragma once
-
-#include "chrome/browser/ui/views/bubble/border_contents.h"
-#include "chrome/browser/ui/views/bubble/bubble.h"
-
-// This is a specialization of BorderContents, used to draw a border around
-// an Bubble that has its contents pinned to a specific location. See
-// base class for details.
-class PinnedContentsBorderContents : public BorderContents {
- public:
-  explicit PinnedContentsBorderContents(const gfx::Point& bubble_anchor)
-      : bubble_anchor_(bubble_anchor) {}
-
-  // BorderContents overrides:
-  virtual void SizeAndGetBounds(
-      const gfx::Rect& position_relative_to,  // In screen coordinates
-      views::BubbleBorder::ArrowLocation arrow_location,
-      bool allow_bubble_offscreen,
-      const gfx::Size& contents_size,
-      gfx::Rect* contents_bounds,             // Returned in window coordinates
-      gfx::Rect* window_bounds);              // Returned in screen coordinates
-
- private:
-  // The location of the pinned contents (in screen coordinates).
-  const gfx::Point bubble_anchor_;
-
-  DISALLOW_COPY_AND_ASSIGN(PinnedContentsBorderContents);
-};
-
-// A specialization of the Bubble. Used to draw an Bubble which, in
-// addition to having an arrow pointing to where the user clicked, also shifts
-// the bubble horizontally to fix it to a specific location. See base class
-// for details.
-class PinnedContentsInfoBubble : public Bubble {
- public:
-  // Shows the Bubble (see base class function for details).
-  // |bubble_anchor| specifies how far horizontally to shift the bubble in
-  // order to anchor its contents. Once the Bubble has been anchored its
-  // arrow may be pointing to a slightly different |y| location than specified
-  // in |position_relative_to|.
-  static PinnedContentsInfoBubble* Show(
-      views::Widget* parent,
-      const gfx::Rect& position_relative_to,
-      views::BubbleBorder::ArrowLocation arrow_location,
-      const gfx::Point& bubble_anchor_,
-      views::View* contents,
-      BubbleDelegate* delegate);
-
-  // Bubble overrides:
-  virtual BorderContents* CreateBorderContents();
-
- private:
-  explicit PinnedContentsInfoBubble(const gfx::Point& bubble_anchor)
-      : bubble_anchor_(bubble_anchor) {}
-  virtual ~PinnedContentsInfoBubble() {}
-
-  // The location of the pinned contents (in screen coordinates).
-  const gfx::Point bubble_anchor_;
-
-  DISALLOW_COPY_AND_ASSIGN(PinnedContentsInfoBubble);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_PINNED_CONTENTS_INFO_BUBBLE_H_