Remove TabContents from autofill unittests.

chrome/browser/autofill/autofill_external_delegate_unittest.cc

Index: chrome/browser/autofill/autofill_external_delegate_unittest.cc
diff --git a/chrome/browser/autofill/autofill_external_delegate_unittest.cc b/chrome/browser/autofill/autofill_external_delegate_unittest.cc
index 116a3146b4535715dd9bf2829238b3cc76f7545c..6471f5d52b1b5e5bdbc65b3d91e95c6fffd19d85 100644
--- a/chrome/browser/autofill/autofill_external_delegate_unittest.cc
+++ b/chrome/browser/autofill/autofill_external_delegate_unittest.cc
@@ -10,9 +10,9 @@
 #include "chrome/browser/autofill/autofill_manager.h"
 #include "chrome/browser/autofill/test_autofill_external_delegate.h"
 #include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
-#include "chrome/browser/ui/tab_contents/test_tab_contents.h"
 #include "chrome/common/form_data.h"
 #include "chrome/common/form_field_data.h"
+#include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -80,14 +80,15 @@ class MockAutofillManager : public AutofillManager {
 
 }  // namespace
 
-class AutofillExternalDelegateUnitTest : public TabContentsTestHarness {
+class AutofillExternalDelegateUnitTest
+    : public ChromeRenderViewHostTestHarness {
  public:
   AutofillExternalDelegateUnitTest()
       : ui_thread_(BrowserThread::UI, &message_loop_) {}
   virtual ~AutofillExternalDelegateUnitTest() {}
 
   virtual void SetUp() OVERRIDE {
-    TabContentsTestHarness::SetUp();
+    ChromeRenderViewHostTestHarness::SetUp();
     TabAutofillManagerDelegate::CreateForWebContents(web_contents());
     autofill_manager_ = new MockAutofillManager(
         web_contents(),