Update from https://crrev.com/305340

net/url_request/url_request_simple_job.cc

 // Copyright (c) 2012 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 "net/url_request/url_request_simple_job.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 29 matching lines @@
 
 bool URLRequestSimpleJob::GetCharset(std::string* charset) {
   *charset = charset_;
   return true;
 }
 
 URLRequestSimpleJob::~URLRequestSimpleJob() {}
 
 bool URLRequestSimpleJob::ReadRawData(IOBuffer* buf, int buf_size,
                                       int* bytes_read) {
+  // TODO(vadimt): Remove ScopedTracker below once crbug.com/422489 is fixed.
+  tracked_objects::ScopedTracker tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "422489 URLRequestSimpleJob::ReadRawData"));
+
   DCHECK(bytes_read);
   int remaining = byte_range_.last_byte_position() - data_offset_ + 1;
   if (buf_size > remaining)
     buf_size = remaining;
   memcpy(buf->data(), data_->front() + data_offset_, buf_size);
   data_offset_ += buf_size;
   *bytes_read = buf_size;
   return true;
 }
 
@@ skipping 76 matching lines @@
     int remaining_bytes = byte_range_.last_byte_position() -
         byte_range_.first_byte_position() + 1;
     set_expected_content_size(remaining_bytes);
     NotifyHeadersComplete();
   } else {
     NotifyStartError(URLRequestStatus(URLRequestStatus::FAILED, result));
   }
 }
 
 }  // namespace net