[chromedriver] Use percentFull instead of value in Tracing.bufferUsage.

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 <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 362 matching lines @@
   FakeBrowserwideClient client;
   FakeLog log;
   Session session("test");
   PerfLoggingPrefs prefs;
   prefs.trace_categories = "benchmark,blink.console";
   PerformanceLogger logger(&log, &session, prefs);
 
   client.AddListener(&logger);
   logger.OnConnected(&client);
   base::DictionaryValue params;
-  params.SetDouble("value", 1.0);
+  params.SetDouble("percentFull", 1.0);
   ASSERT_EQ(kOk, client.TriggerEvent("Tracing.bufferUsage", params).code());
 
   ASSERT_EQ(1u, log.GetEntries().size());
   LogEntry* entry = log.GetEntries()[0];
   EXPECT_EQ(Log::kWarning, entry->level);
   EXPECT_LT(0, entry->timestamp.ToTimeT());
   std::unique_ptr<base::DictionaryValue> message(
       ParseDictionary(entry->message));
   std::string webview;
   EXPECT_TRUE(message->GetString("webview", &webview));
   EXPECT_EQ(DevToolsClientImpl::kBrowserwideDevToolsClientId, webview);
   std::string method;
   EXPECT_TRUE(message->GetString("message.method", &method));
   EXPECT_EQ("Tracing.bufferUsage", method);
   base::DictionaryValue* actual_params;
   EXPECT_TRUE(message->GetDictionary("message.params", &actual_params));
   EXPECT_TRUE(actual_params->HasKey("error"));
 }