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

google_apis/gaia/oauth2_mint_token_flow_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.
 //
 // A complete set of unit tests for OAuth2MintTokenFlow.
 
 #include <string>
 #include <vector>
 
 #include "base/json/json_reader.h"
@@ skipping 117 matching lines @@
 
   MOCK_METHOD1(OnMintTokenSuccess, void(const std::string& access_token));
   MOCK_METHOD1(OnIssueAdviceSuccess,
                void (const IssueAdviceInfo& issue_advice));
   MOCK_METHOD1(OnMintTokenFailure,
                void(const GoogleServiceAuthError& error));
 };
 
 class MockMintTokenFlow : public OAuth2MintTokenFlow {
  public:
-  explicit MockMintTokenFlow(MockDelegate* delegate,
-    const OAuth2MintTokenFlow::Parameters& parameters )
+  MockMintTokenFlow(MockDelegate* delegate,
+                    const OAuth2MintTokenFlow::Parameters& parameters)
       : OAuth2MintTokenFlow(NULL, delegate, parameters) {}
   ~MockMintTokenFlow() {}
 
   MOCK_METHOD0(CreateAccessTokenFetcher, OAuth2AccessTokenFetcher*());
   MOCK_METHOD0(CreateMintTokenFetcher, OAuth2MintTokenFetcher*());
 };
 
 }  // namespace
 
 class OAuth2MintTokenFlowTest : public testing::Test {
@@ skipping 199 matching lines @@
   }
 
   {  // Non-null delegate.
     GoogleServiceAuthError error(
         GoogleServiceAuthError::FromConnectionError(101));
     CreateFlow(OAuth2MintTokenFlow::MODE_MINT_TOKEN_NO_FORCE);
     EXPECT_CALL(delegate_, OnMintTokenFailure(error));
     flow_->ProcessMintAccessTokenFailure(error);
   }
 }