[tracing] Add light dumps in the V8 dump provider

gin/v8_isolate_memory_dump_provider.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 GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_
 #define GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_
 
 #include <string>
 
 #include "base/trace_event/memory_dump_provider.h"
@@ skipping 11 matching lines @@
   explicit V8IsolateMemoryDumpProvider(IsolateHolder* isolate_holder);
   ~V8IsolateMemoryDumpProvider() override;
 
   // MemoryDumpProvider implementation.
   bool OnMemoryDump(
       const base::trace_event::MemoryDumpArgs& args,
       base::trace_event::ProcessMemoryDump* process_memory_dump) override;
 
  private:
   void DumpHeapStatistics(
+      const base::trace_event::MemoryDumpArgs& args,
       base::trace_event::ProcessMemoryDump* process_memory_dump);
 
   IsolateHolder* isolate_holder_;  // Not owned.
 
   DISALLOW_COPY_AND_ASSIGN(V8IsolateMemoryDumpProvider);
 };
 
 }  // namespace gin
 
 #endif  // GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_