https://bugs.webkit.org/show_bug.cgi?id=42988

Reviewed by Sam Weinig.

* Shared/WebEvent.h:
(WebKit::WebMouseEvent::WebMouseEvent):
(WebKit::WebMouseEvent::deltaX):
(WebKit::WebMouseEvent::deltaY):
(WebKit::WebMouseEvent::deltaZ):
* Shared/mac/WebEventFactory.mm:
(WebKit::WebEventFactory::createWebMouseEvent):
Add deltaX, deltaY and deltaZ member variables to WebMosueEvent.

* WebKit2.xcodeproj/project.pbxproj:
Rename NetscapePluginMac.cpp to NetscapePluginMac.mm.

* WebProcess/Plugins/Netscape/NetscapePlugin.cpp:
(WebKit::NetscapePlugin::NPP_HandleEvent):
Add NPP_ wrapper.

(WebKit::NetscapePlugin::handleMouseEvent):
(WebKit::NetscapePlugin::handleWheelEvent):
Call the platform variants.

* WebProcess/Plugins/Netscape/mac/NetscapePluginMac.mm: Added.
(WebKit::modifierFlags):
(WebKit::buttonNumber):
(WebKit::initializeMouseEvent):
(WebKit::NetscapePlugin::platformHandleMouseEvent):
Create an NPCocoaEvent and send it to the plug-in.

(WebKit::NetscapePlugin::platformHandleWheelEvent):
Ditto.

* WebProcess/Plugins/PluginView.cpp:
(WebKit::PluginView::handleEvent):
Get the current WebEvent and send it to the plug-in if necessary.

* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::currentEvent):
(WebKit::CurrentEvent::CurrentEvent):
(WebKit::CurrentEvent::~CurrentEvent):
(WebKit::WebPage::mouseEvent):
(WebKit::WebPage::wheelEvent):
(WebKit::WebPage::keyEvent):
* WebProcess/WebPage/WebPage.h:
Add RAII object for keeping track of the current event.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@64063 268f45cc-cd09-0410-ab3c-d52691b4dbfc