Add F16 to the list of allowed formats in GaussianBlur

src/core/SkGpuBlurUtils.cpp

Index: src/core/SkGpuBlurUtils.cpp
diff --git a/src/core/SkGpuBlurUtils.cpp b/src/core/SkGpuBlurUtils.cpp
index ca762e88e3b52ea2a59cf22d3c4f220c4fef7686..5b29884c259ea5da47f444c74a7c138c18da0687 100644
--- a/src/core/SkGpuBlurUtils.cpp
+++ b/src/core/SkGpuBlurUtils.cpp
@@ -222,6 +222,7 @@ sk_sp<GrDrawContext> GaussianBlur(GrContext* context,
              kRGBA_8888_GrPixelConfig == srcTexture->config() ||
              kSRGBA_8888_GrPixelConfig == srcTexture->config() ||
              kSBGRA_8888_GrPixelConfig == srcTexture->config() ||
+             kRGBA_half_GrPixelConfig == srcTexture->config() ||
              kAlpha_8_GrPixelConfig == srcTexture->config());
 
     const int width = dstBounds.width();