Disable TracingControllerTest.NotWhitelistedMetadataStripped for flakiness

content/browser/tracing/tracing_controller_browsertest.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 "content/public/browser/tracing_controller.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/files/file_util.h"
@@ skipping 364 matching lines @@
   last_metadata()->GetString("user-agent", &user_agent);
   EXPECT_TRUE(user_agent.length() > 0);
   std::string os_name;
   last_metadata()->GetString("os-name", &os_name);
   EXPECT_TRUE(os_name.length() > 0);
   std::string cpu_brand;
   last_metadata()->GetString("cpu-brand", &cpu_brand);
   EXPECT_TRUE(cpu_brand.length() > 0);
 }
 
-IN_PROC_BROWSER_TEST_F(TracingControllerTest, NotWhitelistedMetadataStripped) {
+// TODO(crbug.com/642991) Disabled for flakiness.
+IN_PROC_BROWSER_TEST_F(TracingControllerTest,
+                       DISABLED_NotWhitelistedMetadataStripped) {
   TestStartAndStopTracingStringWithFilter();
   // Check that a number of important keys exist in the metadata dictionary.
   EXPECT_TRUE(last_metadata() != NULL);
   std::string cpu_brand;
   last_metadata()->GetString("cpu-brand", &cpu_brand);
   EXPECT_TRUE(cpu_brand.length() > 0);
   EXPECT_TRUE(cpu_brand != "__stripped__");
   std::string network_type;
   last_metadata()->GetString("network-type", &network_type);
   EXPECT_TRUE(network_type.length() > 0);
@@ skipping 46 matching lines @@
 
   TracingController* controller = TracingController::GetInstance();
   EXPECT_TRUE(controller->StartTracing(
       TraceConfig(),
       TracingController::StartTracingDoneCallback()));
   EXPECT_TRUE(controller->StopTracing(NULL));
   base::RunLoop().RunUntilIdle();
 }
 
 }  // namespace content