https://bugs.webkit.org/show_bug.cgi?id=125330

Reviewed by Ryosuke Niwa.

Source/WebCore:

As a step to use TYPE_CASTS_BASE, this cl introduce IMAGE_TYPE_CASTS.
BitmapImage and SVGImage can use it to generate toFoo() type case helper functions.

No new tests, no behavior changes.

* loader/cache/CachedImage.cpp:
(WebCore::CachedImage::imageSizeForRenderer):
(WebCore::CachedImage::resumeAnimatingImagesForLoader):
* platform/graphics/BitmapImage.h:
* platform/graphics/Image.h:
* platform/mac/DragImageMac.mm:
(WebCore::createDragImageFromImage):
* svg/graphics/SVGImage.h:

Source/WebKit2:

As a step to use TYPE_CASTS_BASE, this cl introduce IMAGE_TYPE_CASTS.
BitmapImage, SVGImage can use it to generate toFoo() type case helper functions.

* WebProcess/Plugins/PluginView.cpp:
(WebKit::PluginView::pluginSnapshotTimerFired):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@160212 268f45cc-cd09-0410-ab3c-d52691b4dbfc