mac: Remove more 10.5-only code

chrome/browser/ui/cocoa/presentation_mode_controller.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/presentation_mode_controller.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #import "base/mac/mac_util.h"
@@ skipping 182 matching lines @@
   contentView_ = contentView;
   [self changeFloatingBarShownFraction:(showDropdown ? 1 : 0)];
 
   // Register for notifications.  Self is removed as an observer in |-cleanup|.
   NSNotificationCenter* nc = [NSNotificationCenter defaultCenter];
   NSWindow* window = [browserController_ window];
 
   // Disable these notifications on Lion as they cause crashes.
   // TODO(rohitrao): Figure out what happens if a fullscreen window changes
   // monitors on Lion.
-  if (base::mac::IsOSSnowLeopardOrEarlier()) {
+  if (base::mac::IsOSSnowLeopard()) {
     [nc addObserver:self
            selector:@selector(windowDidChangeScreen:)
                name:NSWindowDidChangeScreenNotification
              object:window];
 
     [nc addObserver:self
            selector:@selector(windowDidMove:)
                name:NSWindowDidMoveNotification
              object:window];
   }
@@ skipping 200 matching lines @@
 
 @implementation PresentationModeController (PrivateMethods)
 
 - (BOOL)isWindowOnPrimaryScreen {
   NSScreen* screen = [[browserController_ window] screen];
   NSScreen* primaryScreen = [[NSScreen screens] objectAtIndex:0];
   return (screen == primaryScreen);
 }
 
 - (BOOL)shouldToggleMenuBar {
-  return base::mac::IsOSSnowLeopardOrEarlier() &&
+  return base::mac::IsOSSnowLeopard() &&
          [self isWindowOnPrimaryScreen] &&
          [[browserController_ window] isMainWindow];
 }
 
 - (base::mac::FullScreenMode)desiredSystemFullscreenMode {
   if ([browserController_ floatingBarShownFraction] >= 1.0)
     return base::mac::kFullScreenModeHideDock;
   return base::mac::kFullScreenModeHideAll;
 }
 
@@ skipping 210 matching lines @@
 - (void)hideActiveWindowUI {
   if (systemFullscreenMode_ != base::mac::kFullScreenModeNormal) {
     base::mac::ReleaseFullScreen(systemFullscreenMode_);
     systemFullscreenMode_ = base::mac::kFullScreenModeNormal;
   }
 
   // TODO(rohitrao): Remove the Exit Fullscreen button.  http://crbug.com/35956
 }
 
 @end