Revert of memory-infra: Finish moving memory_infra from TracingController

components/tracing/child/child_trace_message_filter.h

 // Copyright (c) 2012 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_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_
 #define COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
+#include "base/trace_event/memory_dump_request_args.h"
 #include "components/tracing/tracing_export.h"
 #include "ipc/message_filter.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace tracing {
 
 // This class sends and receives trace messages on child processes.
 class TRACING_EXPORT ChildTraceMessageFilter : public IPC::MessageFilter {
  public:
   explicit ChildTraceMessageFilter(
       base::SingleThreadTaskRunner* ipc_task_runner);
 
   // IPC::MessageFilter implementation.
   void OnFilterAdded(IPC::Channel* channel) override;
   void OnFilterRemoved() override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
+  void SendGlobalMemoryDumpRequest(
+      const base::trace_event::MemoryDumpRequestArgs& args,
+      const base::trace_event::MemoryDumpCallback& callback);
+
   base::SingleThreadTaskRunner* ipc_task_runner() const {
     return ipc_task_runner_;
   }
 
  protected:
   ~ChildTraceMessageFilter() override;
 
  private:
   friend class ChildTraceMessageFilterTest;
 
   // Message handlers.
   void OnBeginTracing(const std::string& trace_config_str,
                       base::TimeTicks browser_time,
                       uint64_t tracing_process_id);
   void OnEndTracing();
   void OnCancelTracing();
   void OnGetTraceLogStatus();
   void OnSetWatchEvent(const std::string& category_name,
                        const std::string& event_name);
   void OnCancelWatchEvent();
   void OnWatchEventMatched();
+  void OnProcessMemoryDumpRequest(
+      const base::trace_event::MemoryDumpRequestArgs& args);
+  void OnGlobalMemoryDumpResponse(uint64_t dump_guid, bool success);
   void OnSetUMACallback(const std::string& histogram_name,
                         int histogram_lower_value,
                         int histogram_upper_value,
                         bool repeat);
   void OnClearUMACallback(const std::string& histogram_name);
   void OnHistogramChanged(const std::string& histogram_name,
                           base::Histogram::Sample reference_lower_value,
                           base::Histogram::Sample reference_upper_value,
                           bool repeat,
                           base::Histogram::Sample actual_value);
   void SendTriggerMessage(const std::string& histogram_name);
   void SendAbortBackgroundTracingMessage();
 
   // Callback from trace subsystem.
   void OnTraceDataCollected(
       const scoped_refptr<base::RefCountedString>& events_str_ptr,
       bool has_more_events);
 
+  void OnProcessMemoryDumpDone(uint64_t dump_guid, bool success);
+
   void SetSenderForTesting(IPC::Sender* sender);
 
   IPC::Sender* sender_;
   base::SingleThreadTaskRunner* ipc_task_runner_;
 
+  // guid of the outstanding request (to the Browser's MemoryDumpManager), if
+  // any. 0 if there is no request pending.
+  uint64_t pending_memory_dump_guid_;
+
+  // callback of the outstanding memory dump request, if any.
+  base::trace_event::MemoryDumpCallback pending_memory_dump_callback_;
+
   base::Time histogram_last_changed_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildTraceMessageFilter);
 };
 
 }  // namespace tracing
 
 #endif  // COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_