Reland of Linux: Disable DBus auto-launch

base/trace_event/memory_dump_manager.h

Index: base/trace_event/memory_dump_manager.h
diff --git a/base/trace_event/memory_dump_manager.h b/base/trace_event/memory_dump_manager.h
index 1018e453a43a2ee2868b478b83f309de1d6949f7..e7726f456fffe0df2ab46718262ae5077bbdaa74 100644
--- a/base/trace_event/memory_dump_manager.h
+++ b/base/trace_event/memory_dump_manager.h
@@ -46,7 +46,6 @@ class BASE_EXPORT MemoryDumpManager {
                              const GlobalMemoryDumpCallback& callback)>;
 
   static const char* const kTraceCategory;
-  static const char* const kLogPrefix;
 
   // This value is returned as the tracing id of the child processes by
   // GetTracingProcessId() when tracing is not enabled.
@@ -113,13 +112,12 @@ class BASE_EXPORT MemoryDumpManager {
   // to notify about the completion of the global dump (i.e. after all the
   // processes have dumped) and its success (true iff all the dumps were
   // successful).
-  void RequestGlobalDump(MemoryDumpType dump_type,
-                         MemoryDumpLevelOfDetail level_of_detail,
-                         const GlobalMemoryDumpCallback& callback);
+  void RequestGlobalDump(MemoryDumpType,
+                         MemoryDumpLevelOfDetail,
+                         const GlobalMemoryDumpCallback&);
 
   // Same as above (still asynchronous), but without callback.
-  void RequestGlobalDump(MemoryDumpType dump_type,
-                         MemoryDumpLevelOfDetail level_of_detail);
+  void RequestGlobalDump(MemoryDumpType, MemoryDumpLevelOfDetail);
 
   // Prepare MemoryDumpManager for RequestGlobalMemoryDump calls for tracing
   // related modes (non-SUMMARY_ONLY).
@@ -280,6 +278,9 @@ class BASE_EXPORT MemoryDumpManager {
   void GetDumpProvidersForPolling(
       std::vector<scoped_refptr<MemoryDumpProviderInfo>>*);
 
+  // Returns true if Initialize() has been called, false otherwise.
+  bool is_initialized() const { return !request_dump_function_.is_null(); }
+
   // An ordererd set of registered MemoryDumpProviderInfo(s), sorted by task
   // runner affinity (MDPs belonging to the same task runners are adjacent).
   MemoryDumpProviderInfo::OrderedSet dump_providers_;