Run filter animations in the UI process with UI-side compositing

Run filter animations in the UI process with UI-side compositing
https://bugs.webkit.org/show_bug.cgi?id=131199
<rdar://problem/16479487>

Source/WebCore:

Reviewed by Sam Weinig.

Add FilterOperation::clone() which is used during decoding.
Export some things.

* WebCore.exp.in:
* platform/graphics/filters/FilterOperation.h:

Source/WebKit2:

Reviewed by Sam Weinig.

* Shared/WebCoreArgumentCoders.cpp: Removed lots of WebCore::
(IPC::ArgumentCoder<SelectionRect>::decode):
(IPC::ArgumentCoder<PasteboardWebContent>::encode):
(IPC::ArgumentCoder<PasteboardWebContent>::decode):
(IPC::ArgumentCoder<PasteboardImage>::encode):
(IPC::ArgumentCoder<PasteboardImage>::decode):
(IPC::ArgumentCoder<URL>::decode):
(IPC::ArgumentCoder<UserStyleSheet>::encode):
(IPC::ArgumentCoder<UserStyleSheet>::decode):
(IPC::ArgumentCoder<UserScript>::encode):
(IPC::ArgumentCoder<UserScript>::decode):
(IPC::ArgumentCoder<ScrollableAreaParameters>::encode):
(IPC::ArgumentCoder<ScrollableAreaParameters>::decode):
(IPC::ArgumentCoder<FixedPositionViewportConstraints>::encode):
(IPC::ArgumentCoder<FixedPositionViewportConstraints>::decode):
(IPC::ArgumentCoder<StickyPositionViewportConstraints>::encode):
(IPC::ArgumentCoder<StickyPositionViewportConstraints>::decode):
(IPC::ArgumentCoder<FilterOperation>::encode):
(IPC::decodeFilterOperation):
(IPC::ArgumentCoder<FilterOperations>::encode):
(IPC::ArgumentCoder<WebCore::UserStyleSheet>::encode): Deleted.
(IPC::ArgumentCoder<WebCore::UserStyleSheet>::decode): Deleted.
(IPC::ArgumentCoder<WebCore::UserScript>::encode): Deleted.
(IPC::ArgumentCoder<WebCore::UserScript>::decode): Deleted.
(IPC::ArgumentCoder<WebCore::ScrollableAreaParameters>::encode): Deleted.
(IPC::ArgumentCoder<WebCore::ScrollableAreaParameters>::decode): Deleted.
(IPC::ArgumentCoder<WebCore::FixedPositionViewportConstraints>::encode): Deleted.
(IPC::ArgumentCoder<WebCore::FixedPositionViewportConstraints>::decode): Deleted.
(IPC::ArgumentCoder<WebCore::StickyPositionViewportConstraints>::encode): Deleted.
(IPC::ArgumentCoder<WebCore::StickyPositionViewportConstraints>::decode): Deleted.
(IPC::encodeFilterOperation): Deleted.
Add encoding/decoding support for FilterOperation.
decodeFilterOperation() has to be a bare function because of the RefPtr
out parameter.
REFERENCE filters should never be encoded, since they have CachedSVGDocumentReferences.

* Shared/WebCoreArgumentCoders.h:

* Shared/mac/RemoteLayerTreeTransaction.mm:
(WebKit::RemoteLayerTreeTextStream::operator<<):
Add logging for filter animations to the RemoteLayerTree log output.

* WebProcess/WebPage/mac/GraphicsLayerCARemote.h:
* WebProcess/WebPage/mac/GraphicsLayerCARemote.cpp:
(WebKit::GraphicsLayerCARemote::addAnimation): Deleted. We can run
filter animations now.

* WebProcess/WebPage/mac/PlatformCAAnimationRemote.h:
KeyValues have a RefPtr<WebCore::FilterOperation> now (which can't be part of
the union because we need its constructor to get called).
* WebProcess/WebPage/mac/PlatformCAAnimationRemote.mm:
(WebKit::PlatformCAAnimationRemote::KeyframeValue::encode): Encode the filter.
(WebKit::PlatformCAAnimationRemote::KeyframeValue::decode): Decode the filter.
(WebKit::PlatformCAAnimationRemote::setFromValue): Implement.
(WebKit::PlatformCAAnimationRemote::setToValue): Implement.
(WebKit::PlatformCAAnimationRemote::setValues): Implement.
(WebKit::animationValueFromKeyframeValue): Handle filters.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@167266 268f45cc-cd09-0410-ab3c-d52691b4dbfc