<rdar://problem/8185298>
https://bugs.webkit.org/show_bug.cgi?id=44280

Reviewed by Adam Roben.

* UIProcess/API/C/WKAPICast.h:
Add conversion function for modifiers and rename an incorrectly named
toWK to toRef.

* UIProcess/API/C/WKPage.h:
Add WKEventModifiers enum.

* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::didReceiveMessage):
(WebKit::WebPageProxy::decidePolicyForNavigationAction):
(WebKit::WebPageProxy::decidePolicyForNewWindowAction):
* UIProcess/WebPageProxy.h:
* UIProcess/WebPolicyClient.cpp:
(WebKit::WebPolicyClient::decidePolicyForNavigationAction):
(WebKit::WebPolicyClient::decidePolicyForNewWindowAction):
* UIProcess/WebPolicyClient.h:
Pipe through modifier info.

* WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
(WebKit::modifiersForNavigationAction):
(WebKit::WebFrameLoaderClient::dispatchDecidePolicyForNewWindowAction):
(WebKit::WebFrameLoaderClient::dispatchDecidePolicyForNavigationAction):
Get modifier info out of the NavigationInfo class in the same manner as
WebKit1.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@65699 268f45cc-cd09-0410-ab3c-d52691b4dbfc