Remove obsolete app_list Linux code.

chrome/browser/ui/app_list/app_list_positioner.h

-// Copyright 2013 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_APP_LIST_APP_LIST_POSITIONER_H_
-#define CHROME_BROWSER_UI_APP_LIST_APP_LIST_POSITIONER_H_
-
-#include "ui/display/display.h"
-#include "ui/gfx/geometry/size.h"
-
-namespace gfx {
-class Point;
-class Rect;
-}
-
-// Helps anchor the App List, onto the shelf (taskbar, dock or similar) or to
-// the corner of a display. This class does not impose any particular policy for
-// when and how to anchor the window. The platform-specific code that uses this
-// class is free to decide, for example, when the window should be anchored to
-// the cursor versus the corner of the shelf. This class just performs the
-// calculations necessary to position the App List correctly.
-class AppListPositioner {
- public:
-  // Represents one of the four edges of the screen.
-  enum ScreenEdge {
-    SCREEN_EDGE_UNKNOWN,
-    SCREEN_EDGE_LEFT,
-    SCREEN_EDGE_RIGHT,
-    SCREEN_EDGE_TOP,
-    SCREEN_EDGE_BOTTOM
-  };
-
-  // Represents one of the four corners of the screen.
-  enum ScreenCorner {
-    SCREEN_CORNER_TOP_LEFT,
-    SCREEN_CORNER_TOP_RIGHT,
-    SCREEN_CORNER_BOTTOM_LEFT,
-    SCREEN_CORNER_BOTTOM_RIGHT
-  };
-
-  // The |display| pointer is borrowed, and must outlive this object's lifetime.
-  // |window_size| is the size of the App List.
-  // |min_distance_from_edge| is the minimum distance, in pixels, to position
-  // the app list from the shelf or edge of screen.
-  AppListPositioner(const display::Display& display,
-                    const gfx::Size& window_size,
-                    int min_distance_from_edge);
-
-  // Subtracts a rectangle from the display's work area. This can be used to
-  // ensure that the app list does not overlap the shelf, even in situations
-  // where the shelf is considered part of the work area.
-  void WorkAreaSubtract(const gfx::Rect& rect);
-
-  // Shrinks the display's work area by the given amount on each side.
-  void WorkAreaInset(int left, int top, int right, int bottom);
-
-  // Finds the position for a window to anchor it to a corner of the screen.
-  // |corner| specifies which corner to anchor the window to. Returns the
-  // intended coordinates for the center of the window. This should only be used
-  // when there is no shelf on the display, because if there is, the returned
-  // anchor point will potentially position the window under it.
-  gfx::Point GetAnchorPointForScreenCorner(ScreenCorner corner) const;
-
-  // Finds the position for a window to anchor it to the center of the screen.
-  // Returns the intended coordinates for the center of the window.
-  gfx::Point GetAnchorPointForScreenCenter() const;
-
-  // Finds the position for a window to anchor it to the corner of the shelf.
-  // The window will be aligned to the left of the work area for horizontal
-  // shelves, or to the top for vertical shelves. |shelf_edge| specifies the
-  // location of the shelf. |shelf_edge| must not be SCREEN_EDGE_UNKNOWN.
-  // Returns the intended coordinates for the center of the window.
-  gfx::Point GetAnchorPointForShelfCorner(ScreenEdge shelf_edge) const;
-
-  // Finds the position for a window to anchor it to the center of the shelf.
-  // |shelf_edge| specifies the location of the shelf. It must not be
-  // SCREEN_EDGE_UNKNOWN. Returns the intended coordinates for the center of the
-  // window.
-  gfx::Point GetAnchorPointForShelfCenter(ScreenEdge shelf_edge) const;
-
-  // Finds the position for a window to anchor it to the shelf at a point
-  // closest to the user's mouse cursor. |shelf_edge| specifies the location of
-  // the shelf; |cursor| specifies the location of the user's mouse cursor.
-  // |shelf_edge| must not be SCREEN_EDGE_UNKNOWN. Returns the intended
-  // coordinates for the center of the window.
-  gfx::Point GetAnchorPointForShelfCursor(ScreenEdge shelf_edge,
-                                          const gfx::Point& cursor) const;
-
-  // Determines which edge of the screen the shelf is attached to. Returns
-  // SCREEN_EDGE_UNKNOWN if the shelf is unavailable, hidden, or not on the
-  // current screen.
-  ScreenEdge GetShelfEdge(const gfx::Rect& shelf_rect) const;
-
-  // Gets the lateral distance of the mouse cursor from the edge of the shelf.
-  // For horizontal shelves, this is the vertical distance; for vertical
-  // shelves, this is the horizontal distance. If the cursor is inside the
-  // shelf, returns 0.
-  int GetCursorDistanceFromShelf(ScreenEdge shelf_edge,
-                                 const gfx::Point& cursor) const;
-
- private:
-  // Ensures that an anchor point will result in a window that is fully within
-  // the work area. Returns the updated anchor point.
-  gfx::Point ClampAnchorPoint(gfx::Point anchor) const;
-
-  display::Display display_;
-
-  // Size of the App List.
-  gfx::Size window_size_;
-
-  // The minimum distance, in pixels, to position the app list from the shelf
-  // or edge of screen.
-  int min_distance_from_edge_;
-};
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_POSITIONER_H_