[Autofill/Autocomplete Feature] Substring matching instead of prefix matching.

chrome/browser/ui/autofill/autofill_popup_controller_unittest.cc

 // Copyright (c) 2012 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 "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/autofill/autofill_popup_controller_impl.h"
 #include "chrome/browser/ui/autofill/autofill_popup_view.h"
@@ skipping 28 matching lines @@
 namespace {
 
 class MockAutofillExternalDelegate : public AutofillExternalDelegate {
  public:
   MockAutofillExternalDelegate(AutofillManager* autofill_manager,
                                AutofillDriver* autofill_driver)
       : AutofillExternalDelegate(autofill_manager, autofill_driver) {}
   ~MockAutofillExternalDelegate() override {}
 
   void DidSelectSuggestion(const base::string16& value,
-                           int identifier) override {}
+                           int identifier,
+                           size_t match_start) override {}
   bool RemoveSuggestion(const base::string16& value, int identifier) override {
     return true;
   }
   void ClearPreviewedForm() override {}
   base::WeakPtr<AutofillExternalDelegate> GetWeakPtr() {
     return AutofillExternalDelegate::GetWeakPtr();
   }
 };
 
 class MockAutofillClient : public autofill::TestAutofillClient {
@@ skipping 468 matching lines @@
 
   // The second element was shorter so it should be unchanged.
   EXPECT_EQ(autofill_popup_controller_->GetSuggestionAt(1).value,
             autofill_popup_controller_->GetElidedValueAt(1));
   EXPECT_EQ(autofill_popup_controller_->GetSuggestionAt(1).label,
             autofill_popup_controller_->GetElidedLabelAt(1));
 }
 #endif
 
 }  // namespace autofill