Pull Sky debugger up to services/debugger.

sky/tools/debugger/trace_collector.cc

-// Copyright 2014 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 "sky/tools/debugger/trace_collector.h"
-
-namespace sky {
-namespace debugger {
-
-TraceCollector::TraceCollector(mojo::ScopedDataPipeConsumerHandle source)
-    : drainer_(this, source.Pass()), is_complete_(false) {
-}
-
-TraceCollector::~TraceCollector() {
-}
-
-void TraceCollector::GetTrace(TraceCallback callback) {
-  DCHECK(callback_.is_null());
-  DCHECK(!callback.is_null());
-  if (is_complete_) {
-    callback.Run(GetTraceAsString());
-    return;
-  }
-  callback_ = callback;
-}
-
-void TraceCollector::OnDataAvailable(const void* data, size_t num_bytes) {
-  DCHECK(!is_complete_);
-  const char* chars = static_cast<const char*>(data);
-  trace_.insert(trace_.end(), chars, chars + num_bytes);
-}
-
-void TraceCollector::OnDataComplete() {
-  DCHECK(!is_complete_);
-  is_complete_ = true;
-  if (!callback_.is_null())
-    callback_.Run(GetTraceAsString());
-}
-
-std::string TraceCollector::GetTraceAsString() {
-  return std::string(&trace_.front(), trace_.size());
-}
-
-}  // namespace debugger
-}  // namespace sky