Add source column to chrome://policy showing the origins of policies.

components/policy/core/common/async_policy_provider_unittest.cc

 // Copyright 2013 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 "components/policy/core/common/async_policy_provider.h"
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/sequenced_task_runner.h"
 #include "base/values.h"
 #include "components/policy/core/common/async_policy_loader.h"
 #include "components/policy/core/common/external_data_fetcher.h"
 #include "components/policy/core/common/mock_configuration_policy_provider.h"
+#include "components/policy/core/common/policy_types.h"
 #include "components/policy/core/common/schema_registry.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::Mock;
 using testing::Return;
 using testing::Sequence;
 
 namespace policy {
 
 namespace {
 
 // Helper to write a policy in |bundle| with less code.
 void SetPolicy(PolicyBundle* bundle,
                const std::string& name,
                const std::string& value) {
   bundle->Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))
       .Set(name,
            POLICY_LEVEL_MANDATORY,
            POLICY_SCOPE_USER,
+           POLICY_SOURCE_PLATFORM,
            new base::StringValue(value),
            NULL);
 }
 
 class MockPolicyLoader : public AsyncPolicyLoader {
  public:
   explicit MockPolicyLoader(
       scoped_refptr<base::SequencedTaskRunner> task_runner);
   ~MockPolicyLoader() override;
 
@@ skipping 172 matching lines @@
   EXPECT_CALL(observer, OnUpdatePolicy(provider_.get())).Times(0);
   provider_->Shutdown();
   loop_.RunUntilIdle();
   Mock::VerifyAndClearExpectations(&observer);
 
   provider_->RemoveObserver(&observer);
   provider_.reset();
 }
 
 }  // namespace policy