Add vector GrSLTypes for shorts

Bug: skia:
Change-Id: I686950df9f5470b4885823471957c3859cc692ea
Reviewed-on: https://skia-review.googlesource.com/63441
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
diff --git a/src/gpu/vk/GrVkVaryingHandler.cpp b/src/gpu/vk/GrVkVaryingHandler.cpp
index 21c9771..ff56a39 100644
--- a/src/gpu/vk/GrVkVaryingHandler.cpp
+++ b/src/gpu/vk/GrVkVaryingHandler.cpp
@@ -28,10 +28,16 @@
         case kUint2_GrSLType:
             return 1;
         case kInt2_GrSLType:
+        case kShort2_GrSLType:
+        case kUShort2_GrSLType:
             return 1;
         case kInt3_GrSLType:
+        case kShort3_GrSLType:
+        case kUShort3_GrSLType:
             return 1;
         case kInt4_GrSLType:
+        case kShort4_GrSLType:
+        case kUShort4_GrSLType:
             return 1;
         case kFloat2x2_GrSLType:
         case kHalf2x2_GrSLType: