[MacViews] Implement size constraints for app windows.

chrome/browser/ui/cocoa/apps/nswindow_util.mm

+// 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.
+
+#include "chrome/browser/ui/cocoa/apps/nswindow_util.h"
+
+#include "base/mac/sdk_forward_declarations.h"
+
+void SetFullScreenCollectionBehavior(NSWindow* window, bool allow_fullscreen) {
+  NSWindowCollectionBehavior behavior = [window collectionBehavior];
+  if (allow_fullscreen)
+    behavior |= NSWindowCollectionBehaviorFullScreenPrimary;
+  else
+    behavior &= ~NSWindowCollectionBehaviorFullScreenPrimary;
+  [window setCollectionBehavior:behavior];
+}
+
+void SetResizableStyleMask(NSWindow* window, bool resizable) {
+  NSUInteger style_mask = [window styleMask];
+  if (resizable)
+    style_mask |= NSResizableWindowMask;
+  else
+    style_mask &= ~NSResizableWindowMask;
+  [window setStyleMask:style_mask];
+}