Bump default cache storage quota to 20MB

Bump default cache storage quota to 20MB
https://bugs.webkit.org/show_bug.cgi?id=178132

Patch by Youenn Fablet <youenn@apple.com> on 2017-10-11
Reviewed by Alex Christensen.

Source/WebCore:

Covered by http/wpt/cache-storage/cache-quota.any.html.

* platform/network/NetworkStorageSession.h:
(WebCore::NetworkStorageSession::cacheStoragePerOriginQuota const):
(WebCore::NetworkStorageSession::setCacheStoragePerOriginQuota):

Source/WebKit:

Adding the ability to set the quota per origin through WebsiteDataStore.
Moving cache storage directory setting also in WebsiteDataStore.

* NetworkProcess/NetworkConnectionToWebProcess.cpp:
(WebKit::NetworkConnectionToWebProcess::ensureLegacyPrivateBrowsingSession):
* NetworkProcess/NetworkProcess.cpp:
(WebKit::NetworkProcess::initializeNetworkProcess):
* NetworkProcess/mac/RemoteNetworkingContext.mm:
(WebKit::RemoteNetworkingContext::ensureWebsiteDataStoreSession):
* Shared/WebsiteDataStoreParameters.cpp:
(WebKit::WebsiteDataStoreParameters::encode const):
(WebKit::WebsiteDataStoreParameters::decode):
* Shared/WebsiteDataStoreParameters.h:
* UIProcess/API/APIProcessPoolConfiguration.cpp:
(API::ProcessPoolConfiguration::createWithLegacyOptions):
(API::ProcessPoolConfiguration::createWithWebsiteDataStoreConfiguration):
(API::ProcessPoolConfiguration::ProcessPoolConfiguration):
(API::ProcessPoolConfiguration::copy):
* UIProcess/API/APIProcessPoolConfiguration.h:
* UIProcess/API/C/WKContextConfigurationRef.cpp:
* UIProcess/API/C/WKContextConfigurationRef.h:
* UIProcess/API/Cocoa/WKWebsiteDataStore.mm:
(-[WKWebsiteDataStore _cacheStoragePerOriginQuota]):
(-[WKWebsiteDataStore _setCacheStoragePerOriginQuota:]):
(-[WKWebsiteDataStore _cacheStorageDirectory]):
(-[WKWebsiteDataStore _setCacheStorageDirectory:]):
* UIProcess/API/Cocoa/WKWebsiteDataStorePrivate.h:
* UIProcess/Cocoa/WebProcessPoolCocoa.mm:
* UIProcess/WebProcessPool.cpp:
(WebKit::legacyWebsiteDataStoreConfiguration):
(WebKit::WebProcessPool::ensureNetworkProcess):
(WebKit::WebProcessPool::setAnyPageGroupMightHavePrivateBrowsingEnabled):
* UIProcess/WebProcessPool.h:
* UIProcess/WebsiteData/WebsiteDataStore.h:
(WebKit::WebsiteDataStore::cacheStoragePerOriginQuota const):
(WebKit::WebsiteDataStore::setCacheStoragePerOriginQuota):
(WebKit::WebsiteDataStore::cacheStorageDirectory const):
(WebKit::WebsiteDataStore::setCacheStorageDirectory):

Tools:

* WebKitTestRunner/TestController.cpp:
(WTR::TestController::generateContextConfiguration const):
* WebKitTestRunner/cocoa/TestControllerCocoa.mm:
(WTR::initializeWebViewConfiguration): Setting quota to 400kb

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@223207 268f45cc-cd09-0410-ab3c-d52691b4dbfc