[tracing] IPC messages and stubs for inter-process memory dumps

content/browser/tracing/trace_message_filter.h

Index: content/browser/tracing/trace_message_filter.h
diff --git a/content/browser/tracing/trace_message_filter.h b/content/browser/tracing/trace_message_filter.h
index 9bde6b7c7ad44622ba0bf68b7ba718553be6a1a2..fdaebcf4aeaac41548625e279864eff351502e27 100644
--- a/content/browser/tracing/trace_message_filter.h
+++ b/content/browser/tracing/trace_message_filter.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <vector>
 
+#include "base/trace_event/memory_dump_request_args.h"
 #include "base/trace_event/trace_event.h"
 #include "content/public/browser/browser_message_filter.h"
 
@@ -37,6 +38,8 @@ class TraceMessageFilter : public BrowserMessageFilter {
   void SendSetWatchEvent(const std::string& category_name,
                          const std::string& event_name);
   void SendCancelWatchEvent();
+  void SendProcessMemoryDumpRequest(
+      const base::trace_event::MemoryDumpRequestArgs& args);
 
  protected:
   ~TraceMessageFilter() override;
@@ -50,6 +53,11 @@ class TraceMessageFilter : public BrowserMessageFilter {
   void OnTraceLogStatusReply(const base::trace_event::TraceLogStatus& status);
   void OnTraceDataCollected(const std::string& data);
   void OnMonitoringTraceDataCollected(const std::string& data);
+  void OnGlobalMemoryDumpRequest(
+      const base::trace_event::MemoryDumpRequestArgs& args);
+  void OnProcessMemoryDumpResponse(uint64 dump_guid, bool success);
+
+  void SendGlobalMemoryDumpResponse(uint64 dump_guid, bool success);
 
   // ChildTraceMessageFilter exists:
   bool has_child_;