tracing: restructure to the components/tracing folder

components/tracing/graphics_memory_dump_provider_android.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 COMPONENTS_TRACING_GRAPHICS_MEMORY_DUMP_PROVIDER_ANDROID_H_
-#define COMPONENTS_TRACING_GRAPHICS_MEMORY_DUMP_PROVIDER_ANDROID_H_
-
-#include <stddef.h>
-
-#include <string>
-
-#include "base/containers/hash_tables.h"
-#include "base/gtest_prod_util.h"
-#include "base/macros.h"
-#include "base/memory/singleton.h"
-#include "base/trace_event/memory_dump_provider.h"
-#include "components/tracing/tracing_export.h"
-
-namespace tracing {
-
-// Dump provider which collects memory stats about graphics memory on Android.
-// This requires the presence of the memtrack_helper daemon, which must be
-// executed separetely via a (root) adb shell command. The dump provider will
-// fail (and hence disabled by the MemoryDumpManager) in absence of the helper.
-// See the design-doc https://goo.gl/4Y30p9 for more details.
-class TRACING_EXPORT GraphicsMemoryDumpProvider
-    : public base::trace_event::MemoryDumpProvider {
- public:
-  static GraphicsMemoryDumpProvider* GetInstance();
-
-  // MemoryDumpProvider implementation.
-  bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
-                    base::trace_event::ProcessMemoryDump* pmd) override;
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(GraphicsMemoryDumpProviderTest, ParseResponse);
-  friend struct base::DefaultSingletonTraits<GraphicsMemoryDumpProvider>;
-
-  void ParseResponseAndAddToDump(const char* buf,
-                                 size_t length,
-                                 base::trace_event::ProcessMemoryDump* pmd);
-
-  GraphicsMemoryDumpProvider();
-  ~GraphicsMemoryDumpProvider() override;
-
-  static const char kDumpBaseName[];  // Used by the unittest.
-
-  // Stores key names coming from the memtrack helper in long-lived storage.
-  // This is to allow using cheap char* strings in tracing without copies.
-  base::hash_set<std::string> key_names_;
-
-  DISALLOW_COPY_AND_ASSIGN(GraphicsMemoryDumpProvider);
-};
-
-}  // namespace tracing
-
-#endif  // COMPONENTS_TRACING_GRAPHICS_MEMORY_DUMP_PROVIDER_ANDROID_H_