remove align16 calls in skhader context sizes. will handle this elsewhere as needed

src/effects/gradients/SkSweepGradient.cpp

Index: src/effects/gradients/SkSweepGradient.cpp
diff --git a/src/effects/gradients/SkSweepGradient.cpp b/src/effects/gradients/SkSweepGradient.cpp
index 12d55e8b49118abcca3882a5b26b7405a118a7e6..1bdf40e1155d225138c1ad548e08432b014f34d5 100644
--- a/src/effects/gradients/SkSweepGradient.cpp
+++ b/src/effects/gradients/SkSweepGradient.cpp
@@ -46,7 +46,7 @@ void SkSweepGradient::flatten(SkWriteBuffer& buffer) const {
 }
 
 size_t SkSweepGradient::onContextSize(const ContextRec&) const {
-    return SkAlign16(sizeof(SweepGradientContext));
+    return sizeof(SweepGradientContext);
 }
 
 SkShader::Context* SkSweepGradient::onCreateContext(const ContextRec& rec, void* storage) const {