mac: Remove IsOSLion().

chrome/browser/ui/cocoa/browser_window_controller.mm

 // Copyright 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.h"
 
 #include <cmath>
 #include <numeric>
 #include <utility>
 
@@ skipping 184 matching lines @@
   [base::mac::ObjCCastStrict<ChromeEventProcessingWindow>(window)
       setCommandHandler:[[[BrowserWindowCommandHandler alloc] init]
                             autorelease]];
 }
 
 }  // namespace
 
 @interface NSWindow (NSPrivateApis)
 // Note: These functions are private, use -[NSObject respondsToSelector:]
 // before calling them.
-
-- (void)setBottomCornerRounded:(BOOL)rounded;
-
 - (NSRect)_growBoxRect;
-
 @end
 
 @implementation BrowserWindowController
 
 + (BrowserWindowController*)browserWindowControllerForWindow:(NSWindow*)window {
   while (window) {
     id controller = [window windowController];
     if ([controller isKindOfClass:[BrowserWindowController class]])
       return (BrowserWindowController*)controller;
     window = [window parentWindow];
@@ skipping 37 matching lines @@
     [[self window] setMinSize:minSize];
 
     // Create the bar visibility lock set; 10 is arbitrary, but should hopefully
     // be big enough to hold all locks that'll ever be needed.
     barVisibilityLocks_.reset([[NSMutableSet setWithCapacity:10] retain]);
 
     // Lion will attempt to automagically save and restore the UI. This
     // functionality appears to be leaky (or at least interacts badly with our
     // architecture) and thus BrowserWindowController never gets released. This
     // prevents the browser from being able to quit <http://crbug.com/79113>.
-    if ([window respondsToSelector:@selector(setRestorable:)])
-      [window setRestorable:NO];
+    [window setRestorable:NO];
 
     // Get the windows to swish in on Lion.
-    if ([window respondsToSelector:@selector(setAnimationBehavior:)])
-      [window setAnimationBehavior:NSWindowAnimationBehaviorDocumentWindow];
+    [window setAnimationBehavior:NSWindowAnimationBehaviorDocumentWindow];
 
     // Get the most appropriate size for the window, then enforce the
     // minimum width and height. The window shim will handle flipping
     // the coordinates for us so we can use it to save some code.
     // Note that this may leave a significant portion of the window
     // offscreen, but there will always be enough window onscreen to
     // drag the whole window back into view.
     ui::WindowShowState show_state = ui::SHOW_STATE_DEFAULT;
     gfx::Rect desiredContentRect;
     chrome::GetSavedWindowBoundsAndShowState(browser_.get(),
@@ skipping 1570 matching lines @@
 
 - (TabAlertState)alertState {
   return static_cast<BrowserWindowCocoa*>([self browserWindow])->alert_state();
 }
 
 @end  // @implementation BrowserWindowController
 
 @implementation BrowserWindowController(Fullscreen)
 
 - (void)handleLionToggleFullscreen {
-  DCHECK(base::mac::IsOSLionOrLater());
   chrome::ExecuteCommand(browser_.get(), IDC_FULLSCREEN);
 }
 
 - (void)enterBrowserFullscreenWithToolbar:(BOOL)withToolbar {
   if (!chrome::mac::SupportsSystemFullscreen()) {
     if (![self isInImmersiveFullscreen])
       [self enterImmersiveFullscreen];
     return;
   }
 
@@ skipping 195 matching lines @@
 
 - (BOOL)isTabbedWindow {
   return browser_->is_type_tabbed();
 }
 
 - (NSRect)savedRegularWindowFrame {
   return savedRegularWindowFrame_;
 }
 
 @end  // @implementation BrowserWindowController(WindowType)