Merge Skia @7527

Conflicts resolved in:
	include/gpu/GrBackendEffectFactory.h
	src/core/SkPaint.cpp
	src/effects/gradients/SkLinearGradient.cpp
	src/ports/FontHostConfiguration_android.cpp

Change-Id: I5ad1f8f99f8fdbc26c5f98861701dd0c1cee82fa