Add "previewing on hover" support for single-field autocomplete input

components/autofill/core/browser/autofill_external_delegate_unittest.cc

Index: components/autofill/core/browser/autofill_external_delegate_unittest.cc
diff --git a/components/autofill/core/browser/autofill_external_delegate_unittest.cc b/components/autofill/core/browser/autofill_external_delegate_unittest.cc
index ad86d836bebc462876e46505413897ae12815aec..145c684eb4d904517f6c7e016897562421316af4 100644
--- a/components/autofill/core/browser/autofill_external_delegate_unittest.cc
+++ b/components/autofill/core/browser/autofill_external_delegate_unittest.cc
@@ -45,6 +45,8 @@ class MockAutofillDriver : public TestAutofillDriver {
                void(const base::string16&));
   MOCK_METHOD0(RendererShouldClearFilledForm, void());
   MOCK_METHOD0(RendererShouldClearPreviewedForm, void());
+  MOCK_METHOD1(RendererShouldPreviewAutoCompleteNode,
+               void(const base::string16&));
   MOCK_METHOD1(RendererShouldSetNodeText, void(const base::string16&));
 
  private:
@@ -349,7 +351,7 @@ TEST_F(AutofillExternalDelegateUnitTest, ExternalDelegateInvalidUniqueId) {
   EXPECT_CALL(*autofill_driver_,
               SetRendererActionOnFormDataReception(_)).Times(0);
   EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
-  external_delegate_->DidSelectSuggestion(-1);
+  external_delegate_->DidSelectSuggestion(-1, ASCIIToUTF16(""));

[Ilya Sherman, 2014/02/22 05:59:51]

nit: Prefer "base::string16()" to "ASCIIToUTF16("")".

[ziran.sun, 2014/02/27 15:38:11]

Done.

 
   // Ensure it doesn't try to fill the form in with the negative id.
   EXPECT_CALL(manager_delegate_, HideAutofillPopup());
@@ -369,12 +371,18 @@ TEST_F(AutofillExternalDelegateUnitTest, ExternalDelegateClearPreviewedForm) {
   // cause any previews to get cleared.
   EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
   external_delegate_->DidSelectSuggestion(
-      WebAutofillClient::MenuItemIDPasswordEntry);
+      WebAutofillClient::MenuItemIDPasswordEntry, ASCIIToUTF16("baz foo"));
 
   EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
   EXPECT_CALL(*autofill_driver_, SetRendererActionOnFormDataReception(
       AutofillDriver::FORM_DATA_ACTION_PREVIEW));
-  external_delegate_->DidSelectSuggestion(1);
+  external_delegate_->DidSelectSuggestion(1, ASCIIToUTF16("baz foo"));
+
+  // Ensure selecting an AutoComplete entries will cause any previews to

[Ilya Sherman, 2014/02/22 05:59:51]

nit: "an AutoComplete entries" -> "an autocomplete entry"

[ziran.sun, 2014/02/27 15:38:11]

Done.

+  // get cleared.
+  EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
+  external_delegate_->DidSelectSuggestion(
+      WebAutofillClient::MenuItemIDAutocompleteEntry, ASCIIToUTF16("baz foo"));
 }
 
 // Test that the popup is hidden once we are done editing the autofill field.