Remove balloon notification code. The last user was the Linux GTK port but that's deleted now.

chrome/browser/notifications/balloon.h

-// Copyright (c) 2012 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.
-
-// Handles the visible notification (or balloons).
-
-#ifndef CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
-#define CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "ui/gfx/point.h"
-#include "ui/gfx/rect.h"
-#include "ui/gfx/size.h"
-
-class Balloon;
-class BalloonCollection;
-class BalloonHost;
-class Notification;
-class Profile;
-
-// Interface for a view that displays a balloon.
-class BalloonView {
- public:
-  virtual ~BalloonView() {}
-
-  // Show the view on the screen.
-  virtual void Show(Balloon* balloon) = 0;
-
-  // Notify that the content of notification has chagned.
-  virtual void Update() = 0;
-
-  // Reposition the view to match the position of its balloon.
-  virtual void RepositionToBalloon() = 0;
-
-  // Close the view.
-  virtual void Close(bool by_user) = 0;
-
-  // The total size of the view.
-  virtual gfx::Size GetSize() const = 0;
-
-  // The host for the view's contents. May be NULL if an implementation does
-  // not have a host associated with it (i.e. does not do html rendering).
-  virtual BalloonHost* GetHost() const = 0;
-
-  // Returns the horizontal margin the content is inset by.
-  static int GetHorizontalMargin();
-};
-
-// Represents a Notification on the screen.
-class Balloon {
- public:
-  Balloon(const Notification& notification,
-          Profile* profile,
-          BalloonCollection* collection);
-  virtual ~Balloon();
-
-  const Notification& notification() const { return *notification_.get(); }
-  Profile* profile() const { return profile_; }
-
-  gfx::Point GetPosition() const {
-    return position_ + offset_;
-  }
-  void SetPosition(const gfx::Point& upper_left, bool reposition);
-
-  const gfx::Vector2d& offset() const { return offset_; }
-  void set_offset(const gfx::Vector2d& offset) { offset_ = offset; }
-  void add_offset(const gfx::Vector2d& offset) { offset_.Add(offset); }
-
-  const gfx::Size& content_size() const { return content_size_; }
-  void set_content_size(const gfx::Size& size) { content_size_ = size; }
-
-  const BalloonCollection* collection() const { return collection_; }
-
-  const gfx::Size& min_scrollbar_size() const { return min_scrollbar_size_; }
-  void set_min_scrollbar_size(const gfx::Size& size) {
-    min_scrollbar_size_ = size;
-  }
-
-  // Request a new content size for this balloon. This will get passed
-  // to the balloon collection for checking against available space and
-  // min/max restrictions.
-  void ResizeDueToAutoResize(const gfx::Size& size);
-
-  // Provides a view for this balloon. Ownership transfers to this object.
-  void set_view(BalloonView* balloon_view);
-
-  // Returns the balloon view associated with the balloon.
-  BalloonView* balloon_view() const { return balloon_view_.get(); }
-
-  // Returns the viewing size for the balloon (content + frame).
-  gfx::Size GetViewSize() const { return balloon_view_->GetSize(); }
-
-  // Shows the balloon.
-  virtual void Show();
-
-  // Notify that the content of notification has changed.
-  virtual void Update(const Notification& notification);
-
-  // Called when the balloon is clicked by the user.
-  virtual void OnClick();
-
-  // Called when the user clicks a button in the balloon.
-  virtual void OnButtonClick(int button_index);
-
-  // Called when the balloon is closed, either by user (through the UI)
-  // or by a script.
-  virtual void OnClose(bool by_user);
-
-  // Called by script to cause the balloon to close.
-  virtual void CloseByScript();
-
-  // Returns the ID of the extension that created this balloon's notification.
-  std::string GetExtensionId();
-
- private:
-  // Non-owned pointer to the profile.
-  Profile* profile_;
-
-  // The notification being shown in this balloon.
-  scoped_ptr<Notification> notification_;
-
-  // The collection that this balloon belongs to. Non-owned pointer.
-  BalloonCollection* collection_;
-
-  // The actual UI element for the balloon.
-  scoped_ptr<BalloonView> balloon_view_;
-
-  // Position and size of the balloon on the screen.
-  gfx::Point position_;
-  gfx::Size content_size_;
-
-  // Temporary offset for balloons that need to be positioned in a non-standard
-  // position for keeping the close buttons under the mouse cursor.
-  gfx::Vector2d offset_;
-
-  // Smallest size for this balloon where scrollbars will be shown.
-  gfx::Size min_scrollbar_size_;
-
-  DISALLOW_COPY_AND_ASSIGN(Balloon);
-};
-
-#endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_