memory-infra: Add SUMMARY_ONLY MemoryDumpType

base/trace_event/memory_dump_request_args.h

 // Copyright 2015 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 BASE_TRACE_EVENT_MEMORY_DUMP_REQUEST_ARGS_H_
 #define BASE_TRACE_EVENT_MEMORY_DUMP_REQUEST_ARGS_H_
 
 // This file defines the types and structs used to issue memory dump requests.
 // These are also used in the IPCs for coordinating inter-process memory dumps.
 
@@ skipping 10 matching lines @@
 namespace trace_event {
 
 // Captures the reason why a memory dump is being requested. This is to allow
 // selective enabling of dumps, filtering and post-processing. Keep this
 // consistent with memory_instrumentation.mojo and
 // memory_instrumentation_struct_traits.{h,cc}
 enum class MemoryDumpType {
   PERIODIC_INTERVAL,     // Dumping memory at periodic intervals.
   EXPLICITLY_TRIGGERED,  // Non maskable dump request.
   PEAK_MEMORY_USAGE,     // Dumping memory at detected peak total memory usage.
-  LAST = PEAK_MEMORY_USAGE  // For IPC macros.
+  SUMMARY_ONLY,          // Calculate just the summary & don't add to the trace.
+  LAST = SUMMARY_ONLY    // For IPC macros.

[ssid, 2017/04/25 18:09:51]

Nit: can you remove the comment that says IPC macros. It is no longer true.

[hjd, 2017/04/26 11:11:58]

Done.

 };
 
 // Tells the MemoryDumpProvider(s) how much detailed their dumps should be.
 // Keep this consistent with memory_instrumentation.mojo and
 // memory_instrumentation_struct_traits.{h,cc}
 enum class MemoryDumpLevelOfDetail : uint32_t {
   FIRST,
 
   // For background tracing mode. The dump time is quick, and typically just the
   // totals are expected. Suballocations need not be specified. Dump name must
@@ skipping 76 matching lines @@
 BASE_EXPORT const char* MemoryDumpLevelOfDetailToString(
     const MemoryDumpLevelOfDetail& level_of_detail);
 
 BASE_EXPORT MemoryDumpLevelOfDetail
 StringToMemoryDumpLevelOfDetail(const std::string& str);
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_MEMORY_DUMP_REQUEST_ARGS_H_