Move MockBookmarkModelObserver into bookmarks namespace.

chrome/browser/bookmarks/chrome_bookmark_client_unittest.cc

 // Copyright 2014 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 "chrome/browser/bookmarks/chrome_bookmark_client.h"
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 112 matching lines @@
         return false;
     } else {
       return false;
     }
     return true;
   }
 
   content::TestBrowserThreadBundle thread_bundle_;
   TestingProfile profile_;
   TestingPrefServiceSyncable* prefs_;
-  MockBookmarkModelObserver observer_;
+  bookmarks::MockBookmarkModelObserver observer_;
   ChromeBookmarkClient* client_;
   BookmarkModel* model_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBookmarkClientTest);
 };
 
 TEST_F(ChromeBookmarkClientTest, EmptyManagedNode) {
   // Verifies that the managed node is empty and invisible when the policy is
   // not set.
   model_->RemoveObserver(&observer_);
@@ skipping 135 matching lines @@
   const BookmarkNode* managed_node = client_->managed_node()->GetChild(0);
   ASSERT_TRUE(managed_node);
 
   std::vector<const BookmarkNode*> nodes;
   EXPECT_FALSE(client_->HasDescendantsOfManagedNode(nodes));
   nodes.push_back(user_node);
   EXPECT_FALSE(client_->HasDescendantsOfManagedNode(nodes));
   nodes.push_back(managed_node);
   EXPECT_TRUE(client_->HasDescendantsOfManagedNode(nodes));
 }