mac: Remove IsOSLion().

chrome/browser/ui/cocoa/browser_window_controller_private.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/browser_window_controller_private.h"
 
 #include <cmath>
 
 #import "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 88 matching lines @@
 void RecordFullscreenStyle(FullscreenStyle style) {
   UMA_HISTOGRAM_ENUMERATION(
       "OSX.Fullscreen.Enter.Style", style, FULLSCREEN_STYLE_COUNT);
 }
 
 }  // namespace
 
 @interface NSWindow (NSPrivateApis)
 // Note: These functions are private, use -[NSObject respondsToSelector:]
 // before calling them.
-
 - (NSWindow*)_windowForToolbar;
-
 @end
 
 @implementation BrowserWindowController(Private)
 
 // Create the tab strip controller.
 - (void)createTabStripController {
   DCHECK([overlayableContentsController_ activeContainer]);
   DCHECK([[overlayableContentsController_ activeContainer] window]);
   tabStripController_.reset([[TabStripController alloc]
       initWithView:[self tabStripView]
@@ skipping 784 matching lines @@
   NSPoint iconBottom = locationBarView->GetPageInfoBubblePoint();
 
   // The toolbar, in window coordinates.
   NSView* toolbar = [toolbarController_ view];
   CGFloat toolbarY = NSMinY([toolbar convertRect:[toolbar bounds] toView:nil]);
 
   return iconBottom.y - toolbarY;
 }
 
 - (void)enterAppKitFullscreen {
-  DCHECK(base::mac::IsOSLionOrLater());
   if (FramedBrowserWindow* framedBrowserWindow =
           base::mac::ObjCCast<FramedBrowserWindow>([self window])) {
     [framedBrowserWindow toggleSystemFullScreen];
   }
 }
 
 - (void)exitAppKitFullscreen {
-  DCHECK(base::mac::IsOSLionOrLater());
   if (FramedBrowserWindow* framedBrowserWindow =
           base::mac::ObjCCast<FramedBrowserWindow>([self window])) {
     [framedBrowserWindow toggleSystemFullScreen];
   }
 }
 
 - (NSRect)fullscreenButtonFrame {
   NSButton* fullscreenButton =
       [[self window] standardWindowButton:NSWindowFullScreenButton];
   if (!fullscreenButton)
@@ skipping 311 matching lines @@
 }
 
 - (BOOL)isFullscreenForTabContentOrExtension {
   FullscreenController* controller =
       browser_->exclusive_access_manager()->fullscreen_controller();
   return controller->IsWindowFullscreenForTabOrPending() ||
          controller->IsExtensionFullscreenOrPending();
 }
 
 @end  // @implementation BrowserWindowController(Private)