Add DataReductionProxy IPC to determine if the Data Reduction Proxy was used.

components/data_reduction_proxy/content/browser/data_reduction_proxy_message_filter_unittest.cc

Index: components/data_reduction_proxy/content/browser/data_reduction_proxy_message_filter_unittest.cc
diff --git a/components/data_reduction_proxy/content/browser/data_reduction_proxy_message_filter_unittest.cc b/components/data_reduction_proxy/content/browser/data_reduction_proxy_message_filter_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..84783039e1feef6c57520e865e8472e8c6b4aab8
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+++ b/components/data_reduction_proxy/content/browser/data_reduction_proxy_message_filter_unittest.cc
@@ -0,0 +1,64 @@
+// 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 "components/data_reduction_proxy/content/browser/data_reduction_proxy_message_filter.h"
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config_test_utils.h"
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_test_utils.h"
+#include "components/data_reduction_proxy/core/common/data_reduction_proxy_params_test_utils.h"
+#include "net/base/host_port_pair.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace data_reduction_proxy {
+
+class DataReductionProxyMessageFilterTest : public testing::Test {
+ public:
+  void SetUp() override {
+    test_context_ =
+        DataReductionProxyTestContext::Builder()
+            .WithParamsFlags(DataReductionProxyParams::kAllowed)
+            .WithParamsDefinitions(TestDataReductionProxyParams::HAS_EVERYTHING)
+            .WithMockConfig()
+            .Build();
+    message_filter_ = new DataReductionProxyMessageFilter(
+        test_context_->settings());
+  }
+
+ protected:
+  DataReductionProxyMessageFilter* message_filter() const {
+    return message_filter_.get();
+  }
+
+  MockDataReductionProxyConfig* config() const {
+    return test_context_->mock_config();
+  }
+
+ private:
+  scoped_ptr<DataReductionProxyTestContext> test_context_;
+  scoped_refptr<DataReductionProxyMessageFilter> message_filter_;
+};
+
+TEST_F(DataReductionProxyMessageFilterTest, TestOnWasDataReductionProxyUsed) {
+  net::HostPortPair proxy_server =
+      net::HostPortPair::FromString("www.google.com:443");
+  bool data_reduction_proxy_was_used = false;
+  EXPECT_CALL(*config(), IsDataReductionProxy(testing::_, nullptr))
+      .Times(1)
+      .WillOnce(testing::Return(true));
+  message_filter()->OnWasDataReductionProxyUsed(proxy_server,
+                                                &data_reduction_proxy_was_used);
+  EXPECT_TRUE(data_reduction_proxy_was_used);
+
+  EXPECT_CALL(*config(), IsDataReductionProxy(testing::_, nullptr))
+      .Times(1)
+      .WillOnce(testing::Return(false));
+  message_filter()->OnWasDataReductionProxyUsed(proxy_server,
+                                                &data_reduction_proxy_was_used);
+  EXPECT_FALSE(data_reduction_proxy_was_used);
+}
+
+}  // namespace data_reduction_proxy