I'll work on this

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ad5740ede50e7452a9613b1e32c5e41231553e84

commit ad5740ede50e7452a9613b1e32c5e41231553e84
Author: Sergio Villar Senin <svillar@igalia.com>
Date: Tue Aug 07 15:41:12 2018

Migrate crash_service_uploader.cc to SimpleURLLoader

This CL moves crash_service_uploader.cc away from URLFetcher replacing
it by SimpleURLLoader as part of the network servicification project.

A new API was added to SimpleURLLoader to support upload progress
reporting during uploads. SimpleURLLoader already had an empty
implementation of the URLLoaderClient::OnUploadProgress. From now on,
it instead calls the callback set by the user of the API if any. This
allowed us to find a bug in SimpleURLLoader::OnUploadProgress, it was
not calling the ACK method resulting in assertion failures.

Bug:  844919 
Cq-Include-Trybots: luci.chromium.try:linux_mojo
Change-Id: If9d63b9aadd0c2ac58bf86fa92691bd30cfacf10
Reviewed-on: https://chromium-review.googlesource.com/1154971
Commit-Queue: Sergio Villar <svillar@igalia.com>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581234}
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/android_webview/browser/tracing/aw_tracing_delegate.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/android_webview/browser/tracing/aw_tracing_delegate.h
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/profiling_host/profiling_process_host.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/tracing/background_tracing_field_trial.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/tracing/chrome_tracing_delegate.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/tracing/chrome_tracing_delegate.h
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/tracing/crash_service_uploader.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/tracing/crash_service_uploader.h
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/chrome/browser/tracing/navigation_tracing.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/content/browser/tracing/tracing_controller_browsertest.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/content/browser/tracing/tracing_ui.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/content/public/browser/tracing_delegate.h
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/services/network/public/cpp/simple_url_loader.cc
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/services/network/public/cpp/simple_url_loader.h
[modify] https://crrev.com/ad5740ede50e7452a9613b1e32c5e41231553e84/services/network/public/cpp/simple_url_loader_unittest.cc