[v8] Stop using an IDL to generate V8MutationCallback
https://bugs.webkit.org/show_bug.cgi?id=106122

Reviewed by Adam Barth.

The only real code in the generated V8MutationCallback.{h,cpp} files
were specifically written in CodeGeneratorV8 for its use. By instead
Using completely-hand-written versions of these files, the
CodeGenerator can be simplified (as can all generated Callbacks).
All the actually shared code is still shared via subclassing of
ActiveDOMCallback.

This introduces additional flexibility into the implementation of
MutationCallback which will be used when fixing the MutationObserver
memory leak (http://webkit.org/b/90661) for JSC.

No changes to JSC for now, just a FIXME in the IDL file.

No new tests, refactoringonly.

* WebCore.gypi:
* bindings/scripts/CodeGeneratorV8.pm:
(GenerateCallbackHeader):
(GenerateCallbackImplementation):
* bindings/scripts/test/V8/V8TestCallback.cpp:
(WebCore::V8TestCallback::V8TestCallback):
* bindings/scripts/test/V8/V8TestCallback.h:
(WebCore::V8TestCallback::create):
(V8TestCallback):
* bindings/v8/V8MutationCallback.cpp: Renamed from Source/WebCore/bindings/v8/custom/V8MutationCallbackCustom.cpp.
(WebCore::V8MutationCallback::V8MutationCallback):
(WebCore::V8MutationCallback::handleEvent):
* bindings/v8/V8MutationCallback.h: Added.
(V8MutationCallback):
(WebCore::V8MutationCallback::create):
(WebCore::V8MutationCallback::weakCallback):
* dom/MutationCallback.idl:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Test compositing and slow scrolling behavior of fixed position elements under transformed elements
https://bugs.webkit.org/show_bug.cgi?id=103470

Reviewed by Simon Fraser.

Add test case for the behavior change about fixed position elements under transformed elements in bug 102543 by the way.

* compositing/layer-creation/no-compositing-for-fixed-position-under-transform-expected.txt: Added.
* compositing/layer-creation/no-compositing-for-fixed-position-under-transform.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138842 268f45cc-cd09-0410-ab3c-d52691b4dbfc