48     TraceBufferChunk* chunk = chunks_[*index].release();  in GetChunk()  local
50     if (chunk)  in GetChunk()
51       chunk->Reset(current_chunk_seq_++);  in GetChunk()
53       chunk = new TraceBufferChunk(current_chunk_seq_++);  in GetChunk()
55     return std::unique_ptr<TraceBufferChunk>(chunk);  in GetChunk()
59                    std::unique_ptr<TraceBufferChunk> chunk) override {  in ReturnChunk()  argument
63     DCHECK(chunk);  in ReturnChunk()
66     chunks_[index] = std::move(chunk);  in ReturnChunk()
85     TraceBufferChunk* chunk = chunks_[handle.chunk_index].get();  in GetEventByHandle()  local
86     if (!chunk || chunk->seq() != handle.chunk_seq)  in GetEventByHandle()
88     return chunk->GetEventAt(handle.event_index);  in GetEventByHandle()
179                    std::unique_ptr<TraceBufferChunk> chunk) override {  in ReturnChunk()  argument
184     chunks_[index] = chunk.release();  in ReturnChunk()
201     TraceBufferChunk* chunk = chunks_[handle.chunk_index];  in GetEventByHandle()  local
202     if (!chunk || chunk->seq() != handle.chunk_seq)  in GetEventByHandle()
204     return chunk->GetEventAt(handle.event_index);  in GetEventByHandle()
210       const TraceBufferChunk* chunk = chunks_[current_iteration_index_++];  in NextChunk()  local
211       if (chunk)  in NextChunk()
212         return chunk;  in NextChunk()
226       TraceBufferChunk* chunk = chunks_[i];  in EstimateTraceMemoryOverhead()  local
229       if (chunk)  in EstimateTraceMemoryOverhead()
230         chunk->EstimateTraceMemoryOverhead(overhead);  in EstimateTraceMemoryOverhead()