https://bugs.webkit.org/show_bug.cgi?id=126817

Reviewed by Anders Carlsson.

Source/WebKit2: 

* Shared/APIArray.h:
Update elementsOfType() to use combination of FilterIterator and TransformIterator
(now that FilterIterator no longer has a transform predicate) and make use of the 
makeFoo() helpers.

Source/WTF: 

- Renames IteratorPair to IteratorRange.
- Splits FilterIterator into FilterIterator (which now only filters) and
  TransformIterator (which does the transform part of the old FilterIterator).
  Move both of these to IteratorAdaptors.h

* GNUmakefile.list.am:
* WTF.vcxproj/WTF.vcxproj:
* WTF.vcxproj/WTF.vcxproj.filters:
* WTF.xcodeproj/project.pbxproj:
* wtf/CMakeLists.txt:
* wtf/FilterIterator.h: Removed.
Add/remove files.

* wtf/HashMap.h:
(WTF::HashMap::keys):
(WTF::HashMap::values):
* wtf/RefPtrHashMap.h:
Update for rename to IteratorRange. Simplify by using makeIteratorRange().

* wtf/IteratorAdaptors.h: Copied from wtf/FilterIterator.h.
(WTF::FilterIterator::FilterIterator):
(WTF::FilterIterator::operator*):
(WTF::makeFilterIterator):
(WTF::TransformIterator::TransformIterator):
(WTF::TransformIterator::operator++):
(WTF::TransformIterator::operator*):
(WTF::TransformIterator::operator==):
(WTF::TransformIterator::operator!=):
(WTF::makeTransformIterator):
Split up filtering and transforming. Add makeFilterIterator() and makeTransformIterator()
helpers.

* wtf/IteratorPair.h: Removed.
* wtf/IteratorRange.h: Copied from wtf/IteratorPair.h.
(WTF::IteratorRange::IteratorRange):
(WTF::makeIteratorRange):
Renamed to IteratorRange and adds makeIteratorRange() helper.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@161770 268f45cc-cd09-0410-ab3c-d52691b4dbfc