Add missing (and remove superfluous) 'explicit' from constructors.

chrome/browser/autofill/autofill_external_delegate_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 <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "chrome/browser/autofill/autofill_manager.h"
@@ skipping 37 matching lines @@
 
   MOCK_METHOD0(ClearPreviewedForm, void());
 
   MOCK_METHOD1(EnsurePopupForElement, void(const gfx::Rect& element_bounds));
 
   MOCK_METHOD0(HideAutofillPopup, void());
 };
 
 class MockAutofillManager : public AutofillManager {
  public:
-  explicit MockAutofillManager(content::WebContents* web_contents,
-                               autofill::AutofillManagerDelegate* delegate)
+  MockAutofillManager(content::WebContents* web_contents,
+                      autofill::AutofillManagerDelegate* delegate)
       // Force to use the constructor designated for unit test, but we don't
       // really need personal_data in this test so we pass a NULL pointer.
       : AutofillManager(web_contents, delegate, NULL) {
   }
 
   MOCK_METHOD4(OnFillAutofillFormData,
                void(int query_id,
                     const FormData& form,
                     const FormFieldData& field,
                     int unique_id));
@@ skipping 214 matching lines @@
   EXPECT_CALL(*autofill_manager_, OnFillAutofillFormData(_, _, _, _));
 
   EXPECT_CALL(*external_delegate_, HideAutofillPopup());
 
   // This should trigger a call to hide the popup since
   // we've selected an option.
   external_delegate_->DidAcceptSuggestion(
       suggestions[0],
       WebAutofillClient::MenuItemIDPasswordEntry);
 }