Revert of [MacViews] Implement size constraints for app windows.

chrome/browser/ui/views/apps/native_app_window_frame_view_mac.h

Index: chrome/browser/ui/views/apps/native_app_window_frame_view_mac.h
diff --git a/chrome/browser/ui/views/apps/native_app_window_frame_view_mac.h b/chrome/browser/ui/views/apps/native_app_window_frame_view_mac.h
deleted file mode 100644
index 0509f5caa66b6aad9ca4ba0b7aab4b1d07f15840..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/views/apps/native_app_window_frame_view_mac.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2015 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_APPS_NATIVE_APP_WINDOW_FRAME_VIEW_MAC_H_
-#define CHROME_BROWSER_UI_VIEWS_APPS_NATIVE_APP_WINDOW_FRAME_VIEW_MAC_H_
-
-#include "ui/views/window/native_frame_view.h"
-
-class Widget;
-
-// Provides metrics consistent with a native frame on Mac. The actual frame is
-// drawn by NSWindow.
-class NativeAppWindowFrameViewMac : public views::NativeFrameView {
- public:
-  explicit NativeAppWindowFrameViewMac(views::Widget* frame);
-  ~NativeAppWindowFrameViewMac() override;
-
-  // NonClientFrameView:
-  gfx::Rect GetWindowBoundsForClientBounds(
-      const gfx::Rect& client_bounds) const override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NativeAppWindowFrameViewMac);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_APPS_NATIVE_APP_WINDOW_FRAME_VIEW_MAC_H_