[WK2] Small Caps font variant issue for Italic fonts

[Version] N/A
[Project] N/A
[Title] Fix the smallcaps-italic combination issue
[BinType] N/A
[Customer] N/A
[Issue#] N/A
[Solution] The combination of small-caps and italic is synthesized. If there is a combination of smallcaps and italic then the fon
          cache will give the normal font and we will synthesize(skew) that font face.
[Developer] tanvir.rizvi
[Request] N/A
[Horizontal expansion] N/A
[SCM request] N/A

Change-Id: Ib857cbd00b54f4644321bcebe0bbcb6dd16570e5

Conflicts:

	Source/WTF/wtf/Platform.h