StorageToWebProcessConnection & WebSWServerToContextConnection should use the same...

StorageToWebProcessConnection & WebSWServerToContextConnection should use the same underlying IPC::Connection
https://bugs.webkit.org/show_bug.cgi?id=180147

Reviewed by Brady Eidson.

StorageToWebProcessConnection & WebSWServerToContextConnection should use the same underlying IPC::Connection.
Otherwise, we have with 2 IPC::Connections between the StorageProcess and the ServiceWorker (aka Context) process,
which makes synchronization of IPC messages difficult.

* StorageProcess/StorageProcess.cpp:
(WebKit::StorageProcess::createStorageToWebProcessConnection):
(WebKit::StorageProcess::createServerToContextConnection):
* StorageProcess/StorageProcess.h:
* StorageProcess/StorageProcess.messages.in:
* StorageProcess/StorageToWebProcessConnection.cpp:
(WebKit::StorageToWebProcessConnection::didReceiveMessage):
* UIProcess/ServiceWorkerProcessProxy.cpp:
(WebKit::ServiceWorkerProcessProxy::start):
* UIProcess/ServiceWorkerProcessProxy.h:
* UIProcess/Storage/StorageProcessProxy.cpp:
(WebKit::StorageProcessProxy::getStorageProcessConnection):
(WebKit::StorageProcessProxy::didFinishLaunching):
(WebKit::StorageProcessProxy::establishWorkerContextConnectionToStorageProcess):
* UIProcess/Storage/StorageProcessProxy.h:
* UIProcess/Storage/StorageProcessProxy.messages.in:
* UIProcess/WebProcessPool.cpp:
(WebKit::WebProcessPool::getStorageProcessConnection):
(WebKit::WebProcessPool::establishWorkerContextConnectionToStorageProcess):
* UIProcess/WebProcessPool.h:
* UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::getStorageProcessConnection):
* UIProcess/WebProcessProxy.h:
(WebKit::WebProcessProxy::isServiceWorkerProcess const):
* UIProcess/WebProcessProxy.messages.in:
* WebProcess/Storage/WebToStorageProcessConnection.cpp:
(WebKit::WebToStorageProcessConnection::didReceiveMessage):
* WebProcess/WebProcess.cpp:
(WebKit::WebProcess::didReceiveMessage):
(WebKit::WebProcess::establishWorkerContextConnectionToStorageProcess):
* WebProcess/WebProcess.h:
* WebProcess/WebProcess.messages.in:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@225289 268f45cc-cd09-0410-ab3c-d52691b4dbfc