Allow a service certificate to be specified for provisioning

[ Merge of http://go/wvgerrit/48400 ]

Client identification information has recently been enabled in
provisioning messages. For privacy concerns this information
is being encrypted with a default service certificate.
Apps need to be able to override the default one to allow
for provisioning with third party provisioning services.

Bug: 78420508
Test: WV unit, integration tests
      New WvCdmRequestLicenseTest.ProvisioningTestWithServiceCertificate test
      GTS MediaDrmTestCases

Change-Id: Iee61ad47d33ce011efbea4eb90f7e4b1f032d15f

libwvdrmengine/mediadrm/test/legacy_src/WVDrmPlugin_test.cpp

@@ -85,9 +85,10 @@ class MockCDM : public WvContentDecryptionModule {
   MOCK_METHOD2(QueryOemCryptoSessionId, CdmResponseType(const CdmSessionId&,
                                                         CdmQueryMap*));
 
-  MOCK_METHOD5(GetProvisioningRequest, CdmResponseType(CdmCertificateType,
+  MOCK_METHOD6(GetProvisioningRequest, CdmResponseType(CdmCertificateType,
                                                        const std::string&,
                                                        const CdmIdentifier&,
+                                                       const std::string&,
                                                        CdmProvisioningRequest*,
                                                        std::string*));
 
@@ -605,9 +606,10 @@ TEST_F(WVDrmPluginTest, GetsProvisioningRequests) {
   static const char* kDefaultUrl = "http://google.com/";
 
   EXPECT_CALL(*cdm, GetProvisioningRequest(kCertificateWidevine, IsEmpty(),
-                                          HasOrigin(EMPTY_ORIGIN), _, _))
-      .WillOnce(DoAll(SetArgPointee<3>(cdmRequest),
-                      SetArgPointee<4>(kDefaultUrl),
+                                           HasOrigin(EMPTY_ORIGIN), IsEmpty(),
+                                           _, _))
+      .WillOnce(DoAll(SetArgPointee<4>(cdmRequest),
+                      SetArgPointee<5>(kDefaultUrl),
                       Return(wvcdm::NO_ERROR)));
 
   Vector<uint8_t> request;