[Mac] Use NSThemeFrame instead of NSGrayFrame on 10.8.

chrome/browser/ui/cocoa/browser_frame_view.mm

 // Copyright (c) 2011 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/browser_frame_view.h"
 
 #import <objc/runtime.h>
 #import <Carbon/Carbon.h>
 
 #include "base/logging.h"
+#include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #import "chrome/browser/themes/theme_service.h"
 #import "chrome/browser/ui/cocoa/framed_browser_window.h"
 #import "chrome/browser/ui/cocoa/themed_window.h"
 #include "grit/theme_resources.h"
 #include "grit/theme_resources_standard.h"
 
 static const CGFloat kBrowserFrameViewPaintHeight = 60.0;
 static const NSPoint kBrowserFrameViewPatternPhaseOffset = { -5, 3 };
 
@@ skipping 18 matching lines @@
 
 @implementation BrowserFrameView
 
 + (void)load {
   // This is where we swizzle drawRect, and add in two methods that we
   // need. If any of these fail it shouldn't affect the functionality of the
   // others. If they all fail, we will lose window frame theming and
   // roll overs for our close widgets, but things should still function
   // correctly.
   base::mac::ScopedNSAutoreleasePool pool;
-  Class grayFrameClass = NSClassFromString(@"NSGrayFrame");
-  DCHECK(grayFrameClass);
-  if (!grayFrameClass) return;
+
+  // On 10.8+ the background for textured windows are no longer drawn by
+  // NSGrayFrame, and NSThemeFrame is used instead <http://crbug.com/114745>.
+  Class borderViewClass = NSClassFromString(
+      base::mac::IsOSMountainLionOrLater() ? @"NSThemeFrame" : @"NSGrayFrame");
+  DCHECK(borderViewClass);
+  if (!borderViewClass) return;
 
   // Exchange draw rect.
   Method m0 = class_getInstanceMethod([self class], @selector(drawRect:));
   DCHECK(m0);
   if (m0) {
-    BOOL didAdd = class_addMethod(grayFrameClass,
+    BOOL didAdd = class_addMethod(borderViewClass,
                                   @selector(drawRectOriginal:),
                                   method_getImplementation(m0),
                                   method_getTypeEncoding(m0));
     DCHECK(didAdd);
     if (didAdd) {
-      Method m1 = class_getInstanceMethod(grayFrameClass, @selector(drawRect:));
-      Method m2 = class_getInstanceMethod(grayFrameClass,
+      Method m1 = class_getInstanceMethod(borderViewClass,
+                                          @selector(drawRect:));
+      Method m2 = class_getInstanceMethod(borderViewClass,
                                           @selector(drawRectOriginal:));
       DCHECK(m1 && m2);
       if (m1 && m2) {
         method_exchangeImplementations(m1, m2);
       }
     }
   }
 
   gCanDrawTitle =
-      [grayFrameClass
+      [borderViewClass
         instancesRespondToSelector:@selector(_titlebarTitleRect)] &&
-      [grayFrameClass
+      [borderViewClass
         instancesRespondToSelector:@selector(_drawTitleStringIn:withColor:)];
   gCanGetCornerRadius =
-      [grayFrameClass
+      [borderViewClass
         instancesRespondToSelector:@selector(roundedCornerRadius)];
 
   // Add _shadowFlags. This is a method on NSThemeFrame, not on NSGrayFrame.
   // NSThemeFrame is NSGrayFrame's superclass.
   Class themeFrameClass = NSClassFromString(@"NSThemeFrame");
   DCHECK(themeFrameClass);
   if (!themeFrameClass) return;
   m0 = class_getInstanceMethod([self class], @selector(_shadowFlags));
   DCHECK(m0);
   if (m0) {
@@ skipping 256 matching lines @@
 
   // If this isn't the window class we expect, then pass it on to the
   // original implementation.
   if (![[self window] isKindOfClass:[FramedBrowserWindow class]])
     return [self _shadowFlagsOriginal];
 
   return [self _shadowFlagsOriginal] | 128;
 }
 
 @end