Managed preferences warning banner for Mac preferences dialog

chrome/browser/cocoa/vertical_gradient_view.mm

+// Copyright (c) 2010 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/cocoa/vertical_gradient_view.h"
+
+@implementation VerticalGradientView
+
+- (NSGradient*)gradient {
+  return gradient_;
+}
+
+- (void)setGradient:(NSGradient*)gradient {
+  gradient_.reset([gradient retain]);
+}
+
+- (NSColor*)strokeColor {
+  return strokeColor_;
+}
+
+- (void)setStrokeColor:(NSColor*)strokeColor {
+  strokeColor_.reset([strokeColor retain]);
+}
+
+- (void)drawRect:(NSRect)rect {
+  // Draw gradient.
+  [[self gradient] drawInRect:[self bounds] angle:270];
+
+  // Draw bottom stroke.
+  NSColor* strokeColor = [self strokeColor];
+  if (strokeColor) {
+    [[self strokeColor] set];
+    NSRect borderRect, contentRect;
+    NSDivideRect([self bounds], &borderRect, &contentRect, 1, NSMinYEdge);
+    NSRectFillUsingOperation(borderRect, NSCompositeSourceOver);
+  }
+}
+
+@end