Add abstractions that let embedders drive tests of WebContents.

chrome/browser/autofill/autofill_manager_unittest.cc

Index: chrome/browser/autofill/autofill_manager_unittest.cc
diff --git a/chrome/browser/autofill/autofill_manager_unittest.cc b/chrome/browser/autofill/autofill_manager_unittest.cc
index 29384281991dfd3998b2ba3ba59a3675c9040af1..a50cff2ecb52e431e35f3bc2012d74a4ed0d628a 100644
--- a/chrome/browser/autofill/autofill_manager_unittest.cc
+++ b/chrome/browser/autofill/autofill_manager_unittest.cc
@@ -30,7 +30,7 @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
-#include "content/browser/tab_contents/test_tab_contents.h"
+#include "content/public/browser/web_contents.h"
 #include "content/test/mock_render_process_host.h"
 #include "content/test/test_browser_thread.h"
 #include "googleurl/src/gurl.h"
@@ -44,6 +44,7 @@
 #include "webkit/forms/form_field.h"
 
 using content::BrowserThread;
+using content::WebContents;
 using testing::_;
 using webkit::forms::FormData;
 using webkit::forms::FormField;
@@ -2916,7 +2917,7 @@ TEST_F(AutofillManagerTest, TestTabContentsWithExternalDelegate) {
       switches::kExternalAutofillPopup);
 
   // Setting the contents creates a new TabContentsWrapper.
-  TestTabContents* contents = CreateTestTabContents();
+  WebContents* contents = CreateTestWebContents();
   SetContents(contents);
 
   AutofillManager* autofill_manager = contents_wrapper()->autofill_manager();