Headless: Support sending and receiving of raw protocol messages

headless/lib/headless_devtools_client_browsertest.cc

 // Copyright 2016 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 <memory>
 
 #include "base/json/json_reader.h"
 #include "base/run_loop.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 969 matching lines @@
     EXPECT_FALSE(test_handler_->last_http_request_headers().HasHeader(
         kDevToolsEmulateNetworkConditionsClientId));
     FinishAsynchronousTest();
   }
 
   TestProtocolHandler* test_handler_;  // NOT OWNED
 };
 
 HEADLESS_ASYNC_DEVTOOLED_TEST_F(DevToolsHeaderStrippingTest);
 
+class RawDevtoolsProtocolTest
+    : public HeadlessAsyncDevTooledBrowserTest,
+      public HeadlessDevToolsClient::RawProtocolListener {
+ public:
+  void RunDevTooledTest() override {
+    devtools_client_->SetRawProtocolListener(this);
+    devtools_client_->SendRawDevtoolsMessage(
+        R"({"id": 1, "method": "Runtime.evaluate",
+            "params": {"expression": "1+1"}})");
+  }
+
+  void OnProtocolMessage(const std::string& json_message,
+                         const base::DictionaryValue* parsed_message) override {
+    EXPECT_EQ(
+        "{\"id\":1,\"result\":{\"result\":{\"type\":\"number\","
+        "\"value\":2,\"description\":\"2\"}}}",
+        json_message);
+    FinishAsynchronousTest();
+  }
+};
+
+HEADLESS_ASYNC_DEVTOOLED_TEST_F(RawDevtoolsProtocolTest);
+
 }  // namespace headless