WKWebView: Do not DCHECK on invalid CertVerifierBlockAdapter::Params.

ios/web/net/cert_verifier_block_adapter_unittest.cc

 // Copyright 2015 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 "ios/web/net/cert_verifier_block_adapter.h"
 
 #include "base/test/ios/wait_util.h"
 #include "net/base/net_errors.h"
 #include "net/cert/cert_verify_result.h"
 #include "net/cert/crl_set.h"
@@ skipping 117 matching lines @@
   int actualStatus = -1;
   CertVerifierBlockAdapter::Params params(cert_.get(), kHostName);
   Verify(params, &actualResult, &actualStatus);
 
   // Ensure that Verification results are correct.
   EXPECT_EQ(kExpectedStatus, actualStatus);
   EXPECT_EQ(expectedResult.is_issued_by_known_root,
             actualResult->is_issued_by_known_root);
 }
 
+// Tests |Verify| with invalid arguments.
+TEST_F(CertVerifierBlockAdapterTest, InvalidParamsAndError) {
+  // Set up expectation.
+  const int kExpectedStatus = ERR_INVALID_ARGUMENT;
+  EXPECT_CALL(*cert_verifier_mock_,
+              Verify(nullptr, "", "", 0, nullptr, _, _, _, _))
+      .Times(1)
+      .WillOnce(testing::Return(kExpectedStatus));
+
+  // Call |Verify|.
+  scoped_ptr<CertVerifyResult> actualResult;
+  int actualStatus = -1;
+  CertVerifierBlockAdapter::Params params(nullptr, "");
+  Verify(params, &actualResult, &actualStatus);
+
+  // Ensure that Verification results are correct.
+  EXPECT_EQ(kExpectedStatus, actualStatus);
+  EXPECT_FALSE(actualResult);
+}
+
 // Tests |Verify| with error.
 TEST_F(CertVerifierBlockAdapterTest, DefaultParamsAndError) {
   // Set up expectation.
   const int kExpectedStatus = ERR_INSUFFICIENT_RESOURCES;
   EXPECT_CALL(*cert_verifier_mock_,
               Verify(cert_.get(), kHostName, "", 0, nullptr, _, _, _, _))
       .Times(1)
       .WillOnce(testing::Return(kExpectedStatus));
 
   // Call |Verify|.
@@ skipping 29 matching lines @@
   params.flags = CertVerifier::VERIFY_EV_CERT;
   params.crl_set = crl_set;
   Verify(params, &actualResult, &actualStatus);
 
   // Ensure that Verification results are correct.
   EXPECT_EQ(kExpectedStatus, actualStatus);
   EXPECT_EQ(expectedResult.verified_cert, actualResult->verified_cert);
 }
 
 }  // namespace