Revert of arc: enable Android tracing from chrome://tracing in dev mode

chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.h

-// Copyright 2017 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 CHROME_BROWSER_CHROMEOS_ARC_TRACING_ARC_TRACING_BRIDGE_H_
-#define CHROME_BROWSER_CHROMEOS_ARC_TRACING_ARC_TRACING_BRIDGE_H_
-
-#include <string>
-#include <vector>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/trace_event/trace_event.h"
-#include "components/arc/arc_service.h"
-#include "components/arc/common/tracing.mojom.h"
-#include "components/arc/instance_holder.h"
-#include "content/browser/tracing/arc_tracing_agent.h"
-
-namespace arc {
-
-class ArcBridgeService;
-
-// This class provides the interface to trigger tracing in the container.
-class ArcTracingBridge
-    : public ArcService,
-      public content::ArcTracingAgent::Delegate,
-      public InstanceHolder<mojom::TracingInstance>::Observer {
- public:
-  explicit ArcTracingBridge(ArcBridgeService* bridge_service);
-  ~ArcTracingBridge() override;
-
-  // InstanceHolder<mojom::TracingInstance>::Observer overrides:
-  void OnInstanceReady() override;
-
-  // content::ArcTracingAgent::Delegate overrides:
-  void StartTracing(const base::trace_event::TraceConfig& trace_config,
-                    const StartTracingCallback& callback) override;
-  void StopTracing(const StopTracingCallback& callback) override;
-
- private:
-  struct Category;
-
-  // Callback for QueryAvailableCategories.
-  void OnCategoriesReady(const std::vector<std::string>& categories);
-
-  // List of available categories.
-  std::vector<Category> categories_;
-
-  // NOTE: Weak pointers must be invalidated before all other member variables
-  // so it must be the last member.
-  base::WeakPtrFactory<ArcTracingBridge> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ArcTracingBridge);
-};
-
-}  // namespace arc
-
-#endif  // CHROME_BROWSER_CHROMEOS_ARC_TRACING_ARC_TRACING_BRIDGE_H_