Add abstractions that let embedders drive tests of WebContents.

content/browser/tab_contents/navigation_controller_impl_unittest.cc

 // Copyright (c) 2012 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/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 2065 matching lines @@
   // First two entries should have the same SiteInstance.
   SiteInstance* instance1 =
       GetSiteInstanceFromEntry(controller.GetEntryAtIndex(0));
   SiteInstance* instance2 =
       GetSiteInstanceFromEntry(controller.GetEntryAtIndex(1));
   EXPECT_EQ(instance1, instance2);
   EXPECT_EQ(0, controller.GetEntryAtIndex(0)->GetPageID());
   EXPECT_EQ(1, controller.GetEntryAtIndex(1)->GetPageID());
   EXPECT_EQ(1, contents()->GetMaxPageIDForSiteInstance(instance1));
 
-  scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
+  scoped_ptr<TestTabContents> other_contents(
+      static_cast<TestTabContents*>(CreateTestWebContents()));
   NavigationControllerImpl& other_controller =
       other_contents->GetControllerImpl();
   other_contents->NavigateAndCommit(url3);
   other_contents->ExpectSetHistoryLengthAndPrune(
       GetSiteInstanceFromEntry(other_controller.GetEntryAtIndex(0)), 2,
       other_controller.GetEntryAtIndex(0)->GetPageID());
   other_controller.CopyStateFromAndPrune(&controller);
 
   // other_controller should now contain the 3 urls: url1, url2 and url3.
 
@@ skipping 24 matching lines @@
 TEST_F(NavigationControllerTest, CopyStateFromAndPrune2) {
   NavigationControllerImpl& controller = controller_impl();
   const GURL url1("http://foo1");
   const GURL url2("http://foo2");
   const GURL url3("http://foo3");
 
   NavigateAndCommit(url1);
   NavigateAndCommit(url2);
   controller.GoBack();
 
-  scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
+  scoped_ptr<TestTabContents> other_contents(
+      static_cast<TestTabContents*>(CreateTestWebContents()));
   NavigationControllerImpl& other_controller =
       other_contents->GetControllerImpl();
   other_contents->ExpectSetHistoryLengthAndPrune(NULL, 1, -1);
   other_controller.CopyStateFromAndPrune(&controller);
 
   // other_controller should now contain the 1 url: url1.
 
   ASSERT_EQ(1, other_controller.GetEntryCount());
 
   ASSERT_EQ(0, other_controller.GetCurrentEntryIndex());
@@ skipping 13 matching lines @@
 TEST_F(NavigationControllerTest, CopyStateFromAndPrune3) {
   NavigationControllerImpl& controller = controller_impl();
   const GURL url1("http://foo1");
   const GURL url2("http://foo2");
   const GURL url3("http://foo3");
 
   NavigateAndCommit(url1);
   NavigateAndCommit(url2);
   controller.GoBack();
 
-  scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
+  scoped_ptr<TestTabContents> other_contents(
+      static_cast<TestTabContents*>(CreateTestWebContents()));
   NavigationControllerImpl& other_controller =
       other_contents->GetControllerImpl();
   other_controller.LoadURL(
       url3, content::Referrer(), content::PAGE_TRANSITION_TYPED, std::string());
   other_contents->ExpectSetHistoryLengthAndPrune(NULL, 1, -1);
   other_controller.CopyStateFromAndPrune(&controller);
 
   // other_controller should now contain 1 entry for url1, and a pending entry
   // for url3.
 
@@ skipping 29 matching lines @@
   const GURL url3("http://foo/3");
   const GURL url4("http://foo/4");
 
   // Create a PrunedListener to observe prune notifications.
   PrunedListener listener(&controller);
 
   NavigateAndCommit(url1);
   NavigateAndCommit(url2);
   NavigateAndCommit(url3);
 
-  scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
+  scoped_ptr<TestTabContents> other_contents(
+      static_cast<TestTabContents*>(CreateTestWebContents()));
   NavigationControllerImpl& other_controller =
       other_contents->GetControllerImpl();
   other_contents->NavigateAndCommit(url4);
   other_contents->ExpectSetHistoryLengthAndPrune(
       GetSiteInstanceFromEntry(other_controller.GetEntryAtIndex(0)), 2,
       other_controller.GetEntryAtIndex(0)->GetPageID());
   other_controller.CopyStateFromAndPrune(&controller);
 
   // We should have received a pruned notification.
   EXPECT_EQ(1, listener.notification_count_);
@@ skipping 352 matching lines @@
   TabNavigation nav(0, url0, GURL(), string16(),
                     webkit_glue::CreateHistoryStateForURL(url0),
                     content::PAGE_TRANSITION_LINK);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[0]);
   nav.set_url(url2);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[1]);
 }
 */