Issue 734958 has been merged into this issue.

What do SharedWorkers do?

We seem to have EmbeddedSharedWorkerContentSettingsClientProxy which is only used by SharedWorkers so far?

I suspect it's not a big deal in practice because if service worker is enabled, indexed db etc probably are as well because Chrome's content settings are not super granular (they all count as "storage" or "cookies"). But I think we should probably fix this.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a20ac9c693c445d43b5f9710e901c813bc56c75a

commit a20ac9c693c445d43b5f9710e901c813bc56c75a
Author: Yuki Yamada <yukiy@google.com>
Date: Thu Aug 10 08:04:20 2017

Set WebContentSettingsClient for service workers.

WebEmbeddedWorker::Create has taken only nullptr as a param of
content_settings_client from ancient times, so I made
ServiceWorkerContentSettingsProxy and ServiceWorkerContentSettingsProxyImpl.
mojom::ServiceWorkerContentSettingsProxyPtr is created on browser process and
passed onto renderer process through mojom::EmbeddedWorkerInstanceClient::StartWorker.

Bug:  734950 
Change-Id: I1b58e46d6d09783064528e991575cc0fb4831cfd
Reviewed-on: https://chromium-review.googlesource.com/582728
Commit-Queue: Yuki Yamada <yukiy@google.com>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493327}
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/BUILD.gn
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/DEPS
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/embedded_worker_instance.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/embedded_worker_instance_unittest.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/embedded_worker_test_helper.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/embedded_worker_test_helper.h
[add] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/service_worker_content_settings_proxy_impl.cc
[add] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/service_worker_content_settings_proxy_impl.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/service_worker_context_unittest.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/service_worker/service_worker_job_unittest.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/shared_worker/DEPS
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/shared_worker/shared_worker_content_settings_proxy_impl.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/shared_worker/shared_worker_content_settings_proxy_impl.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/browser/shared_worker/shared_worker_host.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/common/service_worker/embedded_worker.mojom
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/renderer/service_worker/embedded_worker_instance_client_impl.cc
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/content/renderer/service_worker/embedded_worker_instance_client_impl.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/core/exported/WebSharedWorkerImpl.cpp
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/core/exported/WebSharedWorkerImpl.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/core/workers/SharedWorkerContentSettingsProxy.cpp
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/core/workers/SharedWorkerContentSettingsProxy.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/modules/exported/WebEmbeddedWorkerImpl.cpp
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/modules/exported/WebEmbeddedWorkerImpl.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/modules/serviceworkers/BUILD.gn
[add] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerContentSettingsProxy.cpp
[add] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerContentSettingsProxy.h
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/Source/modules/serviceworkers/WebEmbeddedWorkerImplTest.cpp
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/public/BUILD.gn
[modify] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/public/web/WebEmbeddedWorker.h
[rename] https://crrev.com/a20ac9c693c445d43b5f9710e901c813bc56c75a/third_party/WebKit/public/web/worker_content_settings_proxy.mojom

This issue is followed up by  https://crbug.com/754182