[Mac] Apply CrTrackingArea to the two other places where we get |-mouseMoved:| zombie messages.

chrome/browser/ui/cocoa/tracking_area.mm

 // Copyright (c) 2011 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/tracking_area.h"
 
 #include "base/logging.h"
 
 // NSTrackingArea does not retain its |owner| so CrTrackingArea wraps the real
 // owner in this proxy, which can stop forwarding messages to the owner when
@@ skipping 74 matching lines @@
 - (NSTrackingArea*)initWithRect:(NSRect)rect
                         options:(NSTrackingAreaOptions)options
                           owner:(id)owner
                        userInfo:(NSDictionary*)userInfo {
   [NSException raise:@"org.chromium.CrTrackingArea"
       format:@"Cannot init a CrTrackingArea with NSTrackingArea's initializer"];
   return nil;
 }
 
 - (void)dealloc {
+  [self clearOwner];
   [[NSNotificationCenter defaultCenter] removeObserver:self];
   [super dealloc];
 }
 
 - (void)clearOwner {
   [ownerProxy_ setAlive:NO];
 }
 
 - (void)clearOwnerWhenWindowWillClose:(NSWindow*)window {
   DCHECK(window);
   NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
   [center addObserver:self
              selector:@selector(windowWillClose:)
                  name:NSWindowWillCloseNotification
                object:window];
 }
 
 - (void)windowWillClose:(NSNotification*)notif {
   [self clearOwner];
 }
 
 @end
+
+// Scoper //////////////////////////////////////////////////////////////////////
+
+ScopedCrTrackingArea::ScopedCrTrackingArea(CrTrackingArea* tracking_area)
+    : tracking_area_(tracking_area) {
+}
+
+ScopedCrTrackingArea::~ScopedCrTrackingArea() {
+  [tracking_area_ clearOwner];
+}
+
+void ScopedCrTrackingArea::reset(CrTrackingArea* tracking_area) {
+  tracking_area_.reset(tracking_area);
+}
+
+CrTrackingArea* ScopedCrTrackingArea::get() const {
+  return tracking_area_.get();
+}