Add trace-to-file support for base::TestSuite

base/base_switches.cc

 // Copyright (c) 2012 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 "base/base_switches.h"
 
 namespace switches {
 
 // Disables the crash reporting.
 const char kDisableBreakpad[]               = "disable-breakpad";
@@ skipping 32 matching lines @@
 // "*/foo/bar/*=2" would change the logging level for all code in
 // source files under a "foo/bar" directory.
 const char kVModule[]                       = "vmodule";
 
 // Will wait for 60 seconds for a debugger to come to attach to the process.
 const char kWaitForDebugger[]               = "wait-for-debugger";
 
 // Sends a pretty-printed version of tracing info to the console.
 const char kTraceToConsole[]                = "trace-to-console";
 
+// Sends trace events from these categories to a file.
+// --trace-to-file on its own sends to default categories.
+const char kTraceToFile[]                   = "trace-to-file";
+
+// Specifies the file name for --trace-to-file. If unspecified, it will
+// go to a default file name.
+const char kTraceToFileName[]               = "trace-to-file-name";
+
 // Configure whether chrome://profiler will contain timing information. This
 // option is enabled by default. A value of "0" will disable profiler timing,
 // while all other values will enable it.
 const char kProfilerTiming[]                = "profiler-timing";
 // Value of the --profiler-timing flag that will disable timing information for
 // chrome://profiler.
 const char kProfilerTimingDisabledValue[]   = "0";
 
 #if defined(OS_POSIX)
 // Used for turning on Breakpad crash reporting in a debug environment where
 // crash reporting is typically compiled but disabled.
 const char kEnableCrashReporterForTesting[] =
     "enable-crash-reporter-for-testing";
 #endif
 
 }  // namespace switches