Rename [setS|s]uppressIncrementalRendering to [setS|s]uppressesIncrementalRendering...

Rename [setS|s]uppressIncrementalRendering to [setS|s]uppressesIncrementalRendering and make it WebPreferences API.
https://bugs.webkit.org/show_bug.cgi?id=79433

Reviewed by Dan Bernstein.

Source/WebCore:

* dom/Document.cpp:
(WebCore::Document::implicitClose):
(WebCore::Document::visualUpdatesAllowed):
* page/Settings.cpp:
(WebCore::Settings::Settings):
* page/Settings.h:
(WebCore::Settings::setSuppressesIncrementalRendering):
(WebCore::Settings::suppressesIncrementalRendering):
(Settings):

Source/WebKit/mac:

* WebCoreSupport/WebInspectorClient.mm:
(-[WebInspectorWindowController init]):
* WebView/WebPreferenceKeysPrivate.h:
* WebView/WebPreferences.h:
* WebView/WebPreferences.mm:
(+[WebPreferences initialize]):
(-[WebPreferences setSuppressesIncrementalRendering:]):
(-[WebPreferences suppressesIncrementalRendering]):
(-[WebPreferences setSuppressIncrementalRendering:]):
(-[WebPreferences suppressIncrementalRendering]):
* WebView/WebView.mm:
(-[WebView _preferencesChanged:]):

Source/WebKit2:

* Shared/WebPreferencesStore.h:
(WebKit):
* UIProcess/API/C/WKPreferences.cpp:
(WKPreferencesSetSuppressesIncrementalRendering):
(WKPreferencesGetSuppressesIncrementalRendering):
* UIProcess/API/C/WKPreferences.h:
* UIProcess/WebInspectorProxy.cpp:
(WebKit::createInspectorPageGroup):
* WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
(WebKit::WebFrameLoaderClient::dispatchDidFirstLayout):
* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::updatePreferences):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108730 268f45cc-cd09-0410-ab3c-d52691b4dbfc