Add configurable limit to allocations in heap profiler.

base/trace_event/malloc_dump_provider.cc

 // 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.
 
 #include "base/trace_event/malloc_dump_provider.h"
 
 #include <stddef.h>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/allocator/allocator_shim.h"
@@ skipping 177 matching lines @@
             metrics.size += alloc_size.size;
             metrics.count++;
           }
         }
         allocation_register_->EstimateTraceMemoryOverhead(&overhead);
       }
     }  // lock(allocation_register_lock_)
 
     if (!metrics_by_context.empty()) {
       std::unique_ptr<TracedValue> heap_dump = ExportHeapDump(
-          metrics_by_context, pmd->session_state()->stack_frame_deduplicator(),
-          pmd->session_state()->type_name_deduplicator());
+          metrics_by_context, *pmd->session_state());
       pmd->AddHeapDump("malloc", std::move(heap_dump));
     }
     overhead.DumpInto("tracing/heap_profiler_malloc", pmd);
   }
   tid_dumping_heap_ = kInvalidThreadId;
 
   return true;
 }
 
 void MallocDumpProvider::OnHeapProfilingEnabled(bool enabled) {
@@ skipping 45 matching lines @@
       tid_dumping_heap_ == PlatformThread::CurrentId())
     return;
   AutoLock lock(allocation_register_lock_);
   if (!allocation_register_)
     return;
   allocation_register_->Remove(address);
 }
 
 }  // namespace trace_event
 }  // namespace base