[Mac] Refactor bookmark pulsing into BookmarkBubbleObserverCocoa.

chrome/browser/ui/cocoa/bookmarks/bookmark_bubble_observer_cocoa.mm

+// Copyright 2015 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/bookmarks/bookmark_bubble_observer_cocoa.h"
+
+#import <Cocoa/Cocoa.h>
+
+#import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h"
+#import "chrome/browser/ui/cocoa/browser_window_controller.h"
+
+namespace bookmarks {
+
+BookmarkBubbleObserverCocoa::BookmarkBubbleObserverCocoa(
+    BrowserWindowController* controller)
+    : controller_(controller), lockOwner_([[NSObject alloc] init]) {}
+
+BookmarkBubbleObserverCocoa::~BookmarkBubbleObserverCocoa() {}
+
+void BookmarkBubbleObserverCocoa::OnBookmarkBubbleShown(
+    const BookmarkNode* node) {
+  [controller_ lockBarVisibilityForOwner:lockOwner_ withAnimation:NO delay:NO];
+  [[controller_ bookmarkBarController] startPulsingBookmarkNode:node];
+}
+
+void BookmarkBubbleObserverCocoa::OnBookmarkBubbleHidden() {
+  [controller_ releaseBarVisibilityForOwner:lockOwner_
+                              withAnimation:YES
+                                      delay:NO];
+  [[controller_ bookmarkBarController] stopPulsingBookmarkNode];
+  [controller_ bookmarkBubbleClosed];
+}
+
+}  // namespace bookmarks