https://bugs.webkit.org/show_bug.cgi?id=84512 Repurpose ActiveDOMObject::WillShowDialog to WillDeferLoading

Reviewed by Eric Carlson.

Source/WebCore:

No new tests. (Refactor, no behavior change)

Rename WillShowDialog to WillDeferLoading:
* dom/ActiveDOMObject.h:
* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::suspend):

Don't take a ReasonForSuspension argument anymore, just use WillDeferLoading:
* page/PageGroupLoadDeferrer.cpp:
(WebCore::PageGroupLoadDeferrer::PageGroupLoadDeferrer):
* page/PageGroupLoadDeferrer.h:

Don't pass a Reason anymore as WillDeferLoading is used by default:
* page/Chrome.cpp:
(WebCore::Chrome::runModal):
(WebCore::Chrome::runBeforeUnloadConfirmPanel):
(WebCore::Chrome::runJavaScriptAlert):
(WebCore::Chrome::runJavaScriptConfirm):
(WebCore::Chrome::runJavaScriptPrompt):
(WebCore::Chrome::shouldInterruptJavaScript):

Source/WebKit/blackberry:

PageGroupLoadDeferrer's don't take a ReasonForSuspension argument anymore;
They just use WillDeferLoading by default.

* Api/WebPageGroupLoadDeferrer.cpp:
(BlackBerry::WebKit::WebPageGroupLoadDeferrer::WebPageGroupLoadDeferrer):

* WebCoreSupport/ChromeClientBlackBerry.cpp:
(WebCore::ChromeClientBlackBerry::createWindow):
(WebCore::ChromeClientBlackBerry::runOpenPanel):

Source/WebKit/chromium:

PageGroupLoadDeferrer's don't take a ReasonForSuspension argument anymore;
They just use WillDeferLoading by default.

* src/WebViewImpl.cpp:
(WebKit::WebView::willEnterModalLoop):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114802 268f45cc-cd09-0410-ab3c-d52691b4dbfc