Fix GMOCK WARNING: Uninteresting mock function call - taking default action.

third_party/WebKit/Source/modules/payments/PaymentTestHelper.cpp

 // Copyright 2016 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 "modules/payments/PaymentTestHelper.h"
 
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/Document.h"
 #include "modules/payments/PaymentCurrencyAmount.h"
 #include "modules/payments/PaymentMethodData.h"
@@ skipping 139 matching lines @@
 {
     v8::MicrotasksScope::PerformCheckpoint(m_scriptState->isolate());
     for (MockFunction* mockFunction : m_mockFunctions) {
         testing::Mock::VerifyAndClearExpectations(mockFunction);
     }
 }
 
 v8::Local<v8::Function> PaymentRequestMockFunctionScope::expectCall(String* captor)
 {
     m_mockFunctions.append(new MockFunction(m_scriptState, captor));
+    EXPECT_CALL(*m_mockFunctions.last(), call(testing::_));
     return m_mockFunctions.last()->bind();
 }
 
 v8::Local<v8::Function> PaymentRequestMockFunctionScope::expectCall()
 {
     m_mockFunctions.append(new MockFunction(m_scriptState));
     EXPECT_CALL(*m_mockFunctions.last(), call(testing::_));
     return m_mockFunctions.last()->bind();
 }
 
@@ skipping 22 matching lines @@
     ON_CALL(*this, call(testing::_)).WillByDefault(
         testing::DoAll(SaveValueIn(m_value), testing::ReturnArg<0>()));
 }
 
 v8::Local<v8::Function> PaymentRequestMockFunctionScope::MockFunction::bind()
 {
     return bindToV8Function();
 }
 
 } // namespace blink