[ChromeDriver] Implementing PerfLoggingPrefs for perf log

chrome/test/chromedriver/performance_logger_unittest.cc

 // Copyright 2014 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 "chrome/test/chromedriver/performance_logger.h"
 
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
 #include "base/json/json_reader.h"
 #include "base/memory/scoped_vector.h"
@@ skipping 170 matching lines @@
   ExpectEnableDomains(client1);
   EXPECT_TRUE(client2.PopSentCommand().empty());
 
   ASSERT_EQ(kOk, client1.TriggerEvent("Page.gaga1").code());
   ASSERT_EQ(kOk, client2.TriggerEvent("Timeline.gaga2").code());
 
   ASSERT_EQ(2u, log.GetEntries().size());
   ValidateLogEntry(log.GetEntries()[0], "webview-1", "Page.gaga1");
   ValidateLogEntry(log.GetEntries()[1], "webview-2", "Timeline.gaga2");
 }
+
+TEST(PerformanceLogger, PerfLoggingPrefs) {
+  FakeDevToolsClient client("webview-1");
+  FakeLog log;
+  PerfLoggingPrefs prefs;
+  ASSERT_EQ(PerfLoggingPrefs::InspectorDomainStatus::kDefaultEnabled,
+            prefs.network);
+  prefs.network = PerfLoggingPrefs::InspectorDomainStatus::kExplicitlyDisabled;
+  // Trace categories should be ignored until tracing support is implemented.
+  prefs.trace_categories = "benchmark,webkit.console";
+  PerformanceLogger logger(&log, prefs);
+
+  client.AddListener(&logger);
+  logger.OnConnected(&client);
+  EXPECT_EQ("Page.enable", client.PopSentCommand());
+  // Trace categories ignored, so Timeline shouldn't be implicitly disabled.
+  EXPECT_EQ("Timeline.start", client.PopSentCommand());
+  EXPECT_TRUE(client.PopSentCommand().empty());
+}