Add CdmFileIOProvider interface for use by cdm_adapter

media/cdm/cdm_adapter_unittest.cc

Index: media/cdm/cdm_adapter_unittest.cc
diff --git a/media/cdm/cdm_adapter_unittest.cc b/media/cdm/cdm_adapter_unittest.cc
index ae743852835e4087128a6ead96869435eaf19573..05bed036d347efa67840c8ec351255ff149369c7 100644
--- a/media/cdm/cdm_adapter_unittest.cc
+++ b/media/cdm/cdm_adapter_unittest.cc
@@ -2,7 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "media/cdm/cdm_adapter.h"
+
 #include <stdint.h>
+#include <memory>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ -12,7 +15,7 @@
 #include "media/base/cdm_callback_promise.h"
 #include "media/base/cdm_key_information.h"
 #include "media/base/media_keys.h"
-#include "media/cdm/cdm_adapter.h"
+#include "media/cdm/cdm_file_io.h"
 #include "media/cdm/external_clear_key_test_helper.h"
 #include "media/cdm/simple_cdm_allocator.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -82,9 +85,9 @@ class CdmAdapterTest : public testing::Test {
                            ExpectedResult expected_result) {
     CdmConfig cdm_config;  // default settings of false are sufficient.
     scoped_ptr<CdmAllocator> allocator(new SimpleCdmAllocator());
-
     CdmAdapter::Create(
         helper_.KeySystemName(), library_path, cdm_config, std::move(allocator),
+        base::Bind(&CdmAdapterTest::CreateCdmFileIO, base::Unretained(this)),
         base::Bind(&CdmAdapterTest::OnSessionMessage, base::Unretained(this)),
         base::Bind(&CdmAdapterTest::OnSessionClosed, base::Unretained(this)),
         base::Bind(&CdmAdapterTest::OnLegacySessionError,
@@ -203,6 +206,11 @@ class CdmAdapterTest : public testing::Test {
 
   void RunUntilIdle() { message_loop_.RunUntilIdle(); }
 
+  std::unique_ptr<CdmFileIO> CreateCdmFileIO(cdm::FileIOClient* client) {
+    ADD_FAILURE() << "Should never be called";
+    return nullptr;
+  }
+
   // Methods used for promise resolved/rejected.
   MOCK_METHOD0(OnResolve, void());
   MOCK_METHOD1(OnResolveWithSession, void(const std::string& session_id));