arc: enable Android tracing in verified-boot 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/files/scoped_file.h"
 #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,
+                    base::ScopedFD write_fd,
                     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_