Move base to DEPS

base/files/file_tracing.h

-// Copyright 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 BASE_FILES_FILE_TRACING_H_
-#define BASE_FILES_FILE_TRACING_H_
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-#include "base/macros.h"
-
-#define FILE_TRACING_PREFIX "File"
-
-#define SCOPED_FILE_TRACE_WITH_SIZE(name, size) \
-  FileTracing::ScopedTrace scoped_file_trace;   \
-  if (FileTracing::IsCategoryEnabled())         \
-  scoped_file_trace.Initialize(FILE_TRACING_PREFIX "::" name, this, size)
-
-#define SCOPED_FILE_TRACE(name) SCOPED_FILE_TRACE_WITH_SIZE(name, 0)
-
-namespace base {
-
-class File;
-class FilePath;
-
-class BASE_EXPORT FileTracing {
- public:
-  // Whether the file tracing category is enabled.
-  static bool IsCategoryEnabled();
-
-  class Provider {
-   public:
-    virtual ~Provider() = default;
-
-    // Whether the file tracing category is currently enabled.
-    virtual bool FileTracingCategoryIsEnabled() const = 0;
-
-    // Enables file tracing for |id|. Must be called before recording events.
-    virtual void FileTracingEnable(void* id) = 0;
-
-    // Disables file tracing for |id|.
-    virtual void FileTracingDisable(void* id) = 0;
-
-    // Begins an event for |id| with |name|. |path| tells where in the directory
-    // structure the event is happening (and may be blank). |size| is the number
-    // of bytes involved in the event.
-    virtual void FileTracingEventBegin(
-        const char* name, void* id, const FilePath& path, int64 size) = 0;
-
-    // Ends an event for |id| with |name|.
-    virtual void FileTracingEventEnd(const char* name, void* id) = 0;
-  };
-
-  // Sets a global file tracing provider to query categories and record events.
-  static void SetProvider(Provider* provider);
-
-  // Enables file tracing while in scope.
-  class ScopedEnabler {
-   public:
-    ScopedEnabler();
-    ~ScopedEnabler();
-  };
-
-  class ScopedTrace {
-   public:
-    ScopedTrace();
-    ~ScopedTrace();
-
-    // Called only if the tracing category is enabled. |name| is the name of the
-    // event to trace (e.g. "Read", "Write") and must have an application
-    // lifetime (e.g. static or literal). |file| is the file being traced; must
-    // outlive this class. |size| is the size (in bytes) of this event.
-    void Initialize(const char* name, File* file, int64 size);
-
-   private:
-    // The ID of this trace. Based on the |file| passed to |Initialize()|. Must
-    // outlive this class.
-    void* id_;
-
-    // The name of the event to trace (e.g. "Read", "Write"). Prefixed with
-    // "File".
-    const char* name_;
-
-    DISALLOW_COPY_AND_ASSIGN(ScopedTrace);
-  };
-
-  DISALLOW_COPY_AND_ASSIGN(FileTracing);
-};
-
-}  // namespace base
-
-#endif  // BASE_FILES_FILE_TRACING_H_