Add "previewing on hover" support for password field.

components/autofill/core/browser/test_autofill_driver.h

Index: components/autofill/core/browser/test_autofill_driver.h
diff --git a/components/autofill/core/browser/test_autofill_driver.h b/components/autofill/core/browser/test_autofill_driver.h
index 1ed9486ab6dfca8bb3460219ad7d5b4f88f38b85..5d98b3e8ab7140503bb1d9cbd471a6bedbf96c1b 100644
--- a/components/autofill/core/browser/test_autofill_driver.h
+++ b/components/autofill/core/browser/test_autofill_driver.h
@@ -36,7 +36,9 @@ class TestAutofillDriver : public AutofillDriver {
       const std::vector<FormStructure*>& forms) OVERRIDE;
   virtual void RendererShouldAcceptDataListSuggestion(
       const base::string16& value) OVERRIDE;
-  virtual void RendererShouldAcceptPasswordAutofillSuggestion(
+  virtual void RendererShouldFillPassword(
+      const base::string16& username) OVERRIDE;
+  virtual void RendererShouldPreviewPassword(
       const base::string16& username) OVERRIDE;
   virtual void RendererShouldClearFilledForm() OVERRIDE;
   virtual void RendererShouldClearPreviewedForm() OVERRIDE;