FixupPhase's setUseKindAndUnboxBlahbittyblah and fixDoubleEdge methods should be merged and given intuitive names
https://bugs.webkit.org/show_bug.cgi?id=121202

Reviewed by Geoffrey Garen.
        
Got rid of a method whose name was so descriptive that I couldn't ever remember
it. And despite the descriptive name, I always had to look at its implementation
to remind myself what it did, anyway.
        
Now that method is called fixEdge(). This is a good name because we're in a phase
called FixupPhase, and we call this fixEdge() method on pretty much every edge.
For the Int48 work, it makes more sense for this method to be a kind of hook into
which we can place various things: it's just a way of observing edges that need
attention.
        
As part of this refactoring, I also fold fixDoubleEdge into fixEdge. This makes
sense because previously it was never correct to call fixDoubleEdge with non-
double use kinds; and conversely it was never correct to call fixEdge with double
use kinds.
        
Also I found that isDouble() in DFGUseKind.h would return true for KnownInt32Use.
That's almost certainly wrong, and removing that behavior doesn't fail any tests.
I'm assuming that was just a bug.

* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
(JSC::DFG::FixupPhase::fixupToPrimitive):
(JSC::DFG::FixupPhase::fixupToString):
(JSC::DFG::FixupPhase::fixupSetLocalsInBlock):
(JSC::DFG::FixupPhase::fixEdge):
(JSC::DFG::FixupPhase::fixIntEdge):
(JSC::DFG::FixupPhase::attemptToMakeIntegerAdd):
(JSC::DFG::FixupPhase::convertToGetArrayLength):
(JSC::DFG::FixupPhase::attemptToMakeGetTypedArrayByteOffset):
* dfg/DFGUseKind.h:
(JSC::DFG::isDouble):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@155590 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Merge RenderPart into RenderWidget.
<https://webkit.org/b/121200>

Reviewed by Anders Carlsson.

Remove the RenderPart class and move its functionality into RenderWidget.
It was acting as a pointless extra layer between RenderWidget and renderers
for embedded objects, frames and iframes.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@155591 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Fix Windows build.

* rendering/RenderingAllInOne.cpp:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@155592 268f45cc-cd09-0410-ab3c-d52691b4dbfc