mac: Remove more 10.5-only code

chrome/browser/ui/cocoa/extensions/shell_window_cocoa.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.
 
 #include "chrome/browser/ui/cocoa/extensions/shell_window_cocoa.h"
 
 #include "base/mac/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/cocoa/browser_window_utils.h"
@@ skipping 111 matching lines @@
   if (min_size.width() || min_size.height()) {
     [window setContentMinSize:NSMakeSize(min_size.width(), min_size.height())];
   }
   gfx::Size max_size = params.maximum_size;
   if (max_size.width() || max_size.height()) {
     CGFloat max_width = max_size.width() ? max_size.width() : CGFLOAT_MAX;
     CGFloat max_height = max_size.height() ? max_size.height() : CGFLOAT_MAX;
     [window setContentMaxSize:NSMakeSize(max_width, max_height)];
   }
 
-  if (base::mac::IsOSSnowLeopardOrEarlier() &&
+  if (base::mac::IsOSSnowLeopard() &&
       [window respondsToSelector:@selector(setBottomCornerRounded:)])
     [window setBottomCornerRounded:NO];
 
   window_controller_.reset(
       [[ShellWindowController alloc] initWithWindow:window.release()]);
 
   NSView* view = web_contents()->GetView()->GetNativeView();
   [view setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
 
   InstallView();
@@ skipping 50 matching lines @@
 void ShellWindowCocoa::SetFullscreen(bool fullscreen) {
   if (fullscreen == is_fullscreen_)
     return;
   is_fullscreen_ = fullscreen;
 
   if (base::mac::IsOSLionOrLater()) {
     [window() toggleFullScreen:nil];
     return;
   }
 
-  DCHECK(base::mac::IsOSSnowLeopardOrEarlier());
+  DCHECK(base::mac::IsOSSnowLeopard());
 
   // Fade to black.
   const CGDisplayReservationInterval kFadeDurationSeconds = 0.6;
   bool did_fade_out = false;
   CGDisplayFadeReservationToken token;
   if (CGAcquireDisplayFadeReservation(kFadeDurationSeconds, &token) ==
       kCGErrorSuccess) {
     did_fade_out = true;
     CGDisplayFade(token, kFadeDurationSeconds / 2, kCGDisplayBlendNormal,
         kCGDisplayBlendSolidColor, 0.0, 0.0, 0.0, /*synchronous=*/true);
@@ skipping 205 matching lines @@
   return [window_controller_ window];
 }
 
 // static
 ShellWindow* ShellWindow::CreateImpl(Profile* profile,
                                      const extensions::Extension* extension,
                                      const GURL& url,
                                      const ShellWindow::CreateParams& params) {
   return new ShellWindowCocoa(profile, extension, url, params);
 }