memory-infra: Move dump level check to observer and rename session state

base/trace_event/heap_profiler_heap_dump_writer.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_HEAP_PROFILER_HEAP_DUMP_WRITER_H_
 #define BASE_TRACE_EVENT_HEAP_PROFILER_HEAP_DUMP_WRITER_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
 #include <unordered_map>
 
 #include "base/base_export.h"
 #include "base/macros.h"
 #include "base/trace_event/heap_profiler_allocation_context.h"
 
 namespace base {
 namespace trace_event {
 
-class MemoryDumpSessionState;
+class HeapProfilerSerializationState;
 class StackFrameDeduplicator;
 class TracedValue;
 class TypeNameDeduplicator;
 
 // Aggregates |metrics_by_context|, recursively breaks down the heap, and
 // returns a traced value with an "entries" array that can be dumped in the
 // trace log, following the format described in https://goo.gl/KY7zVE. The
 // number of entries is kept reasonable because long tails are not included.
 BASE_EXPORT std::unique_ptr<TracedValue> ExportHeapDump(
     const std::unordered_map<AllocationContext, AllocationMetrics>&
         metrics_by_context,
-    const MemoryDumpSessionState& session_state);
+    const HeapProfilerSerializationState& heap_profiler_serialization_state);
 
 namespace internal {
 
 namespace {
 struct Bucket;
 }
 
 // An entry in the "entries" array as described in https://goo.gl/KY7zVE.
 struct BASE_EXPORT Entry {
   size_t size;
@@ skipping 62 matching lines @@
   uint32_t breakdown_threshold_bytes_;
 
   DISALLOW_COPY_AND_ASSIGN(HeapDumpWriter);
 };
 
 }  // namespace internal
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_HEAP_PROFILER_HEAP_DUMP_WRITER_H_