Remove unused -[BrowserCrApplication isCyclingWindows]

Change-Id: I6dcd067fec2a7b5ac8f730bba5ca6f83fdd9035d
Reviewed-on: https://chromium-review.googlesource.com/c/1298304
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602542}

chrome/browser/chrome_browser_application_mac.h

@@ -17,17 +17,12 @@
                                                 CrAppControlProtocol> {
  @private
   BOOL handlingSendEvent_;
-  BOOL cyclingWindows_;
 }
 
 // Our implementation of |-terminate:| only attempts to terminate the
 // application, i.e., begins a process which may lead to termination. This
 // method cancels that process.
 - (void)cancelTerminate:(id)sender;
-
-// Keep track of whether windows are being cycled for use in determining whether
-// a Panel window can become the key window.
-- (BOOL)isCyclingWindows;
 @end
 
 #endif  // __OBJC__

chrome/browser/chrome_browser_application_mac.mm

@@ -4,7 +4,6 @@
 
 #import "chrome/browser/chrome_browser_application_mac.h"
 
-#include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/call_with_eh_frame.h"
@@ -101,12 +100,6 @@ std::string DescriptionForNSEvent(NSEvent* event) {
 
 }  // namespace
 
-// Method exposed for the purposes of overriding.
-// Used to determine when a Panel window can become the key window.
-@interface NSApplication (PanelsCanBecomeKey)
-- (void)_cycleWindowsReversed:(BOOL)arg1;
-@end
-
 @interface BrowserCrApplication ()<NativeEventProcessor> {
   base::ObserverList<content::NativeEventProcessorObserver>::Unchecked
       observers_;
@@ -134,14 +127,6 @@ std::string DescriptionForNSEvent(NSEvent* event) {
     }
   }
 
-  // Sanity check to alert if overridden methods are not supported.
-  DCHECK([NSApplication
-      instancesRespondToSelector:@selector(_cycleWindowsReversed:)]);
-  DCHECK([NSApplication
-      instancesRespondToSelector:@selector(_removeWindow:)]);
-  DCHECK([NSApplication
-      instancesRespondToSelector:@selector(_setKeyWindow:)]);
-
   return self;
 }
 
@@ -368,15 +353,6 @@ std::string DescriptionForNSEvent(NSEvent* event) {
   return [super accessibilitySetValue:value forAttribute:attribute];
 }
 
-- (void)_cycleWindowsReversed:(BOOL)arg1 {
-  base::AutoReset<BOOL> pin(&cyclingWindows_, YES);
-  [super _cycleWindowsReversed:arg1];
-}
-
-- (BOOL)isCyclingWindows {
-  return cyclingWindows_;
-}
-
 - (void)addNativeEventProcessorObserver:
     (content::NativeEventProcessorObserver*)observer {
   observers_.AddObserver(observer);