Reverting 26214.

chrome/browser/cocoa/focus_tracker.mm

Index: chrome/browser/cocoa/focus_tracker.mm
===================================================================
--- chrome/browser/cocoa/focus_tracker.mm	(revision 26217)
+++ chrome/browser/cocoa/focus_tracker.mm	(working copy)
@@ -1,46 +0,0 @@
-// Copyright (c) 2009 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/cocoa/focus_tracker.h"
-
-#include "base/logging.h"
-
-@implementation FocusTracker
-
-- (id)initWithWindow:(NSWindow*)window {
-  if ((self = [super init])) {
-    NSResponder* current_focus = [window firstResponder];
-
-    // Special case NSTextViews, because they are removed from the
-    // view hierarchy when their text field does not have focus.  If
-    // an NSTextView is the current first responder, save a pointer to
-    // its NSTextField delegate instead.
-    if ([current_focus isKindOfClass:[NSTextView class]]) {
-      id delegate = [(NSTextView*)current_focus delegate];
-      if ([delegate isKindOfClass:[NSTextField class]])
-        current_focus = delegate;
-      else
-        current_focus = nil;
-    }
-
-    if ([current_focus isKindOfClass:[NSView class]]) {
-      NSView* current_focus_view = (NSView*)current_focus;
-      focusedView_.reset([current_focus_view retain]);
-    }
-  }
-
-  return self;
-}
-
-- (BOOL)restoreFocusInWindow:(NSWindow*)window {
-  if (!focusedView_.get())
-    return NO;
-
-  if ([focusedView_ window] && [focusedView_ window] == window)
-    return [window makeFirstResponder:focusedView_.get()];
-
-  return NO;
-}
-
-@end