Move CrTrackingArea from chrome/browser/ui/cocoa to ui/base/cocoa.

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 {
- @private
-  NSUInteger messageCount_;
-}
-@property(nonatomic, assign) NSUInteger messageCount;
-- (void)performMessage;
-@end
-
-@implementation TestTrackingAreaOwner
-@synthesize messageCount = messageCount_;
-- (void)performMessage {
-  ++messageCount_;
-}
-@end
-
-class CrTrackingAreaTest : public CocoaTest {
- public:
-  CrTrackingAreaTest()
-      : owner_([[TestTrackingAreaOwner alloc] init]),
-        trackingArea_([[CrTrackingArea alloc]
-            initWithRect:NSMakeRect(0, 0, 100, 100)
-                 options:NSTrackingMouseMoved | NSTrackingActiveInKeyWindow
-                   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]);
-
-  [[trackingArea_ owner] performMessage];
-  EXPECT_EQ(2U, [owner_ messageCount]);
-}
-
-TEST_F(CrTrackingAreaTest, OwnerStopsForwarding) {
-  [[trackingArea_ owner] performMessage];
-  EXPECT_EQ(1U, [owner_ messageCount]);
-
-  [trackingArea_ clearOwner];
-
-  [[trackingArea_ owner] performMessage];
-  EXPECT_EQ(1U, [owner_ messageCount]);
-}
-
-TEST_F(CrTrackingAreaTest, OwnerAutomaticallyStopsForwardingOnClose) {
-  [test_window() orderFront:nil];
-  [trackingArea_ clearOwnerWhenWindowWillClose:test_window()];
-
-  [[trackingArea_ owner] performMessage];
-  EXPECT_EQ(1U, [owner_ messageCount]);
-
-  [test_window() close];
-
-  [[trackingArea_ owner] performMessage];
-  EXPECT_EQ(1U, [owner_ messageCount]);
-}
-
-TEST_F(CrTrackingAreaTest, ScoperInit) {
-  {
-    ScopedCrTrackingArea scoper([trackingArea_ retain]);
-    [[scoper.get() owner] performMessage];
-    EXPECT_EQ(1U, [owner_ messageCount]);
-  }
-
-  [[trackingArea_ owner] performMessage];
-  EXPECT_EQ(1U, [owner_ messageCount]);
-}
-
-TEST_F(CrTrackingAreaTest, ScoperReset) {
-  {
-    ScopedCrTrackingArea scoper;
-    EXPECT_FALSE(scoper.get());
-
-    scoper.reset([trackingArea_ retain]);
-    [[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]);
-}