mac: Remove code that was only needed on 10.5

chrome/browser/ui/cocoa/tracking_area_unittest.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.
 
 #include "base/memory/scoped_nsobject.h"
 #include "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/tracking_area.h"
 
 // A test object that counts the number of times a message is sent to it.
 @interface TestTrackingAreaOwner : NSObject {
@@ skipping 11 matching lines @@
 }
 @end
 
 class CrTrackingAreaTest : public CocoaTest {
  public:
   CrTrackingAreaTest()
       : owner_([[TestTrackingAreaOwner alloc] init]),
         trackingArea_([[CrTrackingArea alloc]
             initWithRect:NSMakeRect(0, 0, 100, 100)
                  options:NSTrackingMouseMoved | NSTrackingActiveInKeyWindow
-            proxiedOwner:owner_.get()
+                   owner:owner_.get()
                 userInfo:nil]) {
   }
 
   scoped_nsobject<TestTrackingAreaOwner> owner_;
   scoped_nsobject<CrTrackingArea> trackingArea_;
 };
 
 TEST_F(CrTrackingAreaTest, OwnerForwards) {
   [[trackingArea_ owner] performMessage];
   EXPECT_EQ(1U, [owner_ messageCount]);
@@ skipping 45 matching lines @@
     [[scoper.get() owner] performMessage];
     EXPECT_EQ(1U, [owner_ messageCount]);
 
     [[scoper.get() owner] performMessage];
     EXPECT_EQ(2U, [owner_ messageCount]);
   }
 
   [[trackingArea_ owner] performMessage];
   EXPECT_EQ(2U, [owner_ messageCount]);
 }