Fix compilation with clang shipped with Xcode.

components/autofill/core/browser/autofill_external_delegate_unittest.cc

 // Copyright 2013 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 <memory>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
@@ skipping 118 matching lines @@
     external_delegate_.reset();
     autofill_driver_.reset();
   }
 
   // Issue an OnQuery call with the given |query_id|.
   void IssueOnQuery(int query_id) {
     const FormData form;
     FormFieldData field;
     field.is_focusable = true;
     field.should_autocomplete = true;
-    const gfx::RectF element_bounds;
 
-    external_delegate_->OnQuery(query_id, form, field, element_bounds);
+    external_delegate_->OnQuery(query_id, form, field, gfx::RectF());
   }
 
   void IssueOnSuggestionsReturned() {
     std::vector<Suggestion> suggestions;
     suggestions.push_back(Suggestion());
     suggestions[0].frontend_id = kAutofillProfileId;
     external_delegate_->OnSuggestionsReturned(kQueryId, suggestions);
   }
 
   testing::NiceMock<MockAutofillClient> autofill_client_;
@@ skipping 426 matching lines @@
                   base::string16()));
   external_delegate_->OnCreditCardScanned(card_number, expiration_month,
                                           expiration_year);
 }
 
 TEST_F(AutofillExternalDelegateUnitTest, IgnoreAutocompleteOffForAutofill) {
   const FormData form;
   FormFieldData field;
   field.is_focusable = true;
   field.should_autocomplete = false;
-  const gfx::RectF element_bounds;
 
-  external_delegate_->OnQuery(kQueryId, form, field, element_bounds);
+  external_delegate_->OnQuery(kQueryId, form, field, gfx::RectF());
 
   std::vector<Suggestion> autofill_items;
   autofill_items.push_back(Suggestion());
   autofill_items[0].frontend_id = POPUP_ITEM_ID_AUTOCOMPLETE_ENTRY;
 
   // Ensure the popup tries to show itself, despite autocomplete="off".
   EXPECT_CALL(autofill_client_, ShowAutofillPopup(_, _, _, _));
   EXPECT_CALL(autofill_client_, HideAutofillPopup()).Times(0);
 
   external_delegate_->OnSuggestionsReturned(kQueryId, autofill_items);
 }
 
 TEST_F(AutofillExternalDelegateUnitTest, ExternalDelegateFillFieldWithValue) {
   EXPECT_CALL(autofill_client_, HideAutofillPopup());
   base::string16 dummy_string(ASCIIToUTF16("baz foo"));
   EXPECT_CALL(*autofill_driver_,
               RendererShouldFillFieldWithValue(dummy_string));
   base::HistogramTester histogram_tester;
   external_delegate_->DidAcceptSuggestion(dummy_string,
                                           POPUP_ITEM_ID_AUTOCOMPLETE_ENTRY,
                                           0);
   histogram_tester.ExpectUniqueSample(
       "Autofill.SuggestionAcceptedIndex.Autocomplete", 0, 1);
 }
 
 }  // namespace autofill