[Mac]Implement ViewID support.

chrome/browser/cocoa/base_view_unittest.mm

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 <Cocoa/Cocoa.h>
 
 #include "base/scoped_nsobject.h"
 #import "chrome/browser/cocoa/base_view.h"
 #import "chrome/browser/cocoa/cocoa_test_helper.h"
+#import "chrome/browser/cocoa/view_id_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace {
 
 class BaseViewTest : public CocoaTest {
  public:
   BaseViewTest() {
     NSRect frame = NSMakeRect(0, 0, 100, 100);
     scoped_nsobject<BaseView> view([[BaseView alloc] initWithFrame:frame]);
@@ skipping 18 matching lines @@
   EXPECT_EQ(converted.height(), convert.size.height);
 
   // Go back the other way.
   NSRect back_again = [view_ RectToNSRect:converted];
   EXPECT_EQ(back_again.origin.x, convert.origin.x);
   EXPECT_EQ(back_again.origin.y, convert.origin.y);
   EXPECT_EQ(back_again.size.width, convert.size.width);
   EXPECT_EQ(back_again.size.height, convert.size.height);
 }
 
+TEST_F(BaseViewTest, Tag) {
+  [view_ setViewID:VIEW_ID_TAB_0];
+  EXPECT_EQ(VIEW_ID_TAB_0, [view_ viewID]);
+  EXPECT_EQ(view_id_util::ViewIDToTag(VIEW_ID_TAB_0), [view_ tag]);
+  EXPECT_EQ((NSView*)view_, view_id_util::GetView(test_window(), VIEW_ID_TAB_0));
+
+  [view_ setViewID:VIEW_ID_TOOLBAR];
+  EXPECT_EQ(VIEW_ID_TOOLBAR, [view_ viewID]);
+  EXPECT_EQ(view_id_util::ViewIDToTag(VIEW_ID_TOOLBAR), [view_ tag]);
+  EXPECT_EQ((NSView*)view_, view_id_util::GetView(test_window(), VIEW_ID_TOOLBAR));
+}
+
 }  // namespace