Move ContentBrowserTest class to content/public, since it's used by components_browsertests for bro…

content/browser/frame_host/frame_tree_browsertest.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 "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/browser_test_utils.h"
+#include "content/public/test/content_browser_test.h"
+#include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
-#include "content/test/content_browser_test.h"
-#include "content/test/content_browser_test_utils.h"
 #include "net/dns/mock_host_resolver.h"
 
 namespace content {
 
 class FrameTreeBrowserTest : public ContentBrowserTest {
  public:
   FrameTreeBrowserTest() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FrameTreeBrowserTest);
@@ skipping 121 matching lines @@
   // wait for the previous navigation to stop.
   TestNavigationObserver tab_observer(wc, 1);
   shell()->LoadURL(base_url.Resolve("blank.html"));
   tab_observer.Wait();
 
   // The frame tree should now be cleared.
   EXPECT_EQ(0UL, root->child_count());
 }
 
 }  // namespace content