[MacViews] Frameless app windows: make content view cover title bar.

ui/views/widget/native_widget_mac.mm

 // Copyright 2014 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 "ui/views/widget/native_widget_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
@@ skipping 67 matching lines @@
   delegate_->OnNativeWidgetDestroyed();
   if (ownership_ == Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET)
     delete this;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeWidgetMac, internal::NativeWidgetPrivate implementation:
 
 void NativeWidgetMac::InitNativeWidget(const Widget::InitParams& params) {
   ownership_ = params.ownership;
-
-  NSInteger style_mask = StyleMaskForParams(params);
-  base::scoped_nsobject<NSWindow> window([[NativeWidgetMacNSWindow alloc]
-      initWithContentRect:ui::kWindowSizeDeterminedLater
-                styleMask:style_mask
-                  backing:NSBackingStoreBuffered
-                    defer:YES]);
+  base::scoped_nsobject<NSWindow> window([CreateNSWindow(params) retain]);
   [window setReleasedWhenClosed:NO];  // Owned by scoped_nsobject.
   bridge_->Init(window, params);
 
   delegate_->OnNativeWidgetCreated(true);
 
   bridge_->SetFocusManager(GetWidget()->GetFocusManager());
 
   DCHECK(GetWidget()->GetRootView());
   bridge_->SetRootView(GetWidget()->GetRootView());
 
@@ skipping 411 matching lines @@
 
 void NativeWidgetMac::OnSizeConstraintsChanged() {
   NOTIMPLEMENTED();
 }
 
 void NativeWidgetMac::RepostNativeEvent(gfx::NativeEvent native_event) {
   NOTIMPLEMENTED();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// NativeWidgetMac, protected:
+
+NSWindow* NativeWidgetMac::CreateNSWindow(const Widget::InitParams& params) {
+  return [[[NativeWidgetMacNSWindow alloc]
+      initWithContentRect:ui::kWindowSizeDeterminedLater
+                styleMask:StyleMaskForParams(params)
+                  backing:NSBackingStoreBuffered
+                    defer:YES] autorelease];
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // Widget, public:
 
 bool Widget::ConvertRect(const Widget* source,
                          const Widget* target,
                          gfx::Rect* rect) {
   return false;
 }
 
 namespace internal {
 
@@ skipping 82 matching lines @@
 }
 
 // static
 gfx::FontList NativeWidgetPrivate::GetWindowTitleFontList() {
   NOTIMPLEMENTED();
   return gfx::FontList();
 }
 
 }  // namespace internal
 }  // namespace views