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Unified Diff: components/tracing/trace_config_file.h

Issue 1312833007: Revert of Reland [Startup Tracing] Add --trace-config-file flag (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 4 months ago
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Index: components/tracing/trace_config_file.h
diff --git a/components/tracing/trace_config_file.h b/components/tracing/trace_config_file.h
deleted file mode 100644
index 273f9f1c48a9f38b18424c00b5db0c236a57b098..0000000000000000000000000000000000000000
--- a/components/tracing/trace_config_file.h
+++ /dev/null
@@ -1,94 +0,0 @@
-// Copyright (c) 2015 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.
-
-#ifndef COMPONENTS_TRACING_TRACE_CONFIG_FILE_H_
-#define COMPONENTS_TRACING_TRACE_CONFIG_FILE_H_
-
-#include "base/files/file_path.h"
-#include "base/macros.h"
-#include "base/trace_event/trace_config.h"
-#include "components/tracing/tracing_export.h"
-
-template <typename Type> struct DefaultSingletonTraits;
-
-namespace tracing {
-
-// TraceConfigFile is a singleton that contains the configurations of tracing.
-// One can create a trace config file and use it to configure startup and/or
-// shutdown tracing.
-//
-// The trace config file should be JSON formated. One example is:
-// {
-// "trace_config": {
-// "record_mode": "record-until-full",
-// "included_categories": ["cc", "skia"]
-// },
-// "startup_duration": 5,
-// "result_file": "chrometrace.log"
-// }
-//
-// trace_config: The configuration of tracing. Please see the details in
-// base/trace_event/trace_config.h.
-//
-// startup_duration: The duration for startup tracing in terms of seconds.
-// Tracing will stop automatically after the duration. If this
-// value is not specified, the duration is 0 and one needs
-// to stop tracing by other ways, e.g., by DevTools, or get
-// the result file after shutting the browser down.
-//
-// result_file: The file that contains the trace log. The default result
-// file path is chrometrace.log. Chrome will dump the trace
-// log to this file
-// 1) after startup_duration if it is specified;
-// 2) or after browser shutdown if startup duration is 0.
-// One can also stop tracing and get the result by other ways,
-// e.g., by DevTools. In that case, the trace log will not be
-// saved to this file.
-// Notice: This is not supported on Android. The result file
-// path will be generated by tracing controller.
-//
-// The trace config file can be specified by the --trace-config-file flag on
-// most platforms except on Android, e.g., --trace-config-file=path/to/file/.
-// This flag should not be used with --trace-startup or --trace-shutdown. If
-// those two flags are used, --trace-config-file flag will be ignored. If the
-// --trace-config-file flag is used without the file path, Chrome will do
-// startup tracing with 5 seconds' startup duration.
-//
-// On Android, Chrome does not read the --trace-config-file flag, because not
-// all Chrome based browsers read customized flag, e.g., Android WebView. Chrome
-// on Android reads from a fixed file location:
-// /data/local/chrome-trace-config.json
-// If this file exists, Chrome will start tracing according to the configuration
-// specified in the file, otherwise, Chrome will not start tracing.
-class TRACING_EXPORT TraceConfigFile {
- public:
- static TraceConfigFile* GetInstance();
-
- bool IsEnabled() const;
- base::trace_event::TraceConfig GetTraceConfig() const;
- int GetStartupDuration() const;
-#if !defined(OS_ANDROID)
- base::FilePath GetResultFile() const;
-#endif
-
- private:
- // This allows constructor and destructor to be private and usable only
- // by the Singleton class.
- friend struct DefaultSingletonTraits<TraceConfigFile>;
- TraceConfigFile();
- ~TraceConfigFile();
-
- bool ParseTraceConfigFileContent(std::string content);
-
- bool is_enabled_;
- base::trace_event::TraceConfig trace_config_;
- int startup_duration_;
- base::FilePath result_file_;
-
- DISALLOW_COPY_AND_ASSIGN(TraceConfigFile);
-};
-
-} // namespace tracing
-
-#endif // COMPONENTS_TRACING_TRACE_CONFIG_FILE_H_
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