Enable Skia fix for clamp mode blur

Bug: chromium:1156804
Change-Id: Ief802cd221d57d8379a31f16224d654e4fa0dd47
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2587355Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Cr-Commit-Position: refs/heads/master@{#836882}

skia/config/SkUserConfig.h

@@ -214,11 +214,6 @@ SK_API void SkDebugf_FileLine(const char* file,
 #define SK_DISABLE_REDUCE_OPLIST_SPLITTING
 #endif
 
-// Enabling the fix for crbug.com/1156804 will require web test rebaselining.
-#ifndef SK_IGNORE_GPU_CLAMP_BLUR_FIX
-#define SK_IGNORE_GPU_CLAMP_BLUR_FIX
-#endif
-
 // Max. verb count for paths rendered by the edge-AA tessellating path renderer.
 #define GR_AA_TESSELLATOR_MAX_VERB_COUNT 100