browser: Move window sizer to subdir.

chrome/browser/ui/window_sizer_mac.mm

-// 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.
-
-#include "chrome/browser/ui/window_sizer.h"
-
-#import <Cocoa/Cocoa.h>
-
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_list.h"
-#include "chrome/browser/ui/browser_window.h"
-
-// How much horizontal and vertical offset there is between newly
-// opened windows.
-const int WindowSizer::kWindowTilePixels = 22;
-
-// static
-gfx::Point WindowSizer::GetDefaultPopupOrigin(const gfx::Size& size) {
-  NSRect work_area = [[NSScreen mainScreen] visibleFrame];
-  NSRect main_area = [[[NSScreen screens] objectAtIndex:0] frame];
-  NSPoint corner = NSMakePoint(NSMinX(work_area), NSMaxY(work_area));
-
-  if (Browser* b = BrowserList::GetLastActive()) {
-    NSWindow* window = b->window()->GetNativeWindow();
-    NSRect window_frame = [window frame];
-
-    // Limit to not overflow the work area right and bottom edges.
-    NSPoint limit = NSMakePoint(
-        std::min(NSMinX(window_frame) + kWindowTilePixels,
-                 NSMaxX(work_area) - size.width()),
-        std::max(NSMaxY(window_frame) - kWindowTilePixels,
-                 NSMinY(work_area) + size.height()));
-
-    // Adjust corner to now overflow the work area left and top edges, so
-    // that if a popup does not fit the title-bar is remains visible.
-    corner = NSMakePoint(std::max(corner.x, limit.x),
-                         std::min(corner.y, limit.y));
-  }
-
-  return gfx::Point(corner.x, NSHeight(main_area) - corner.y);
-}