Constrained window sheet controller (test patch)

chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_window.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.
+
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_window.h"
+
+#import "base/memory/scoped_nsobject.h"
+#import "chrome/browser/ui/constrained_window.h"
+#include "skia/ext/skia_utils_mac.h"
+
+// The content view for the custom window.
+@interface ConstrainedWindowCustomWindowContentView : NSView
+@end
+
+@implementation ConstrainedWindowCustomWindow
+
+- (id)initWithContentRect:(NSRect)contentRect {
+  if ((self = [super initWithContentRect:contentRect
+                               styleMask:NSBorderlessWindowMask
+                                 backing:NSBackingStoreBuffered
+                                   defer:NO])) {
+    [self setHasShadow:YES];
+    [self setBackgroundColor:[NSColor clearColor]];
+    [self setOpaque:NO];
+    scoped_nsobject<NSView> content_view(
+        [[ConstrainedWindowCustomWindowContentView alloc]
+            initWithFrame:NSZeroRect]);
+    [self setContentView:content_view];
+  }
+  return self;
+}
+
+- (BOOL)canBecomeKeyWindow {
+  return YES;
+}
+
+@end
+
+@implementation ConstrainedWindowCustomWindowContentView
+
+- (void)drawRect:(NSRect)rect {
+  NSBezierPath* path = [NSBezierPath
+      bezierPathWithRoundedRect:[self bounds]
+                        xRadius:ConstrainedWindow::kBorderRadius
+                        yRadius:ConstrainedWindow::kBorderRadius];
+  [gfx::SkColorToCalibratedNSColor(ConstrainedWindow::kBackgroundColor) set];
+  [path fill];
+}
+
+@end