Reenable support for CHROMIUM_set_uniform_location

BUG=skia:5015
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2167303002

Review-Url: https://codereview.chromium.org/2167303002
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index 6a34a30..a484b05 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -192,11 +192,7 @@
         }
     }
 
-#if 0 // Disabled due to https://bug.skia.org/4454
     fBindUniformLocationSupport = ctxInfo.hasExtension("GL_CHROMIUM_bind_uniform_location");
-#else
-    fBindUniformLocationSupport = false;
-#endif
 
     if (kGL_GrGLStandard == standard) {
         if (version >= GR_GL_VER(3, 1) || ctxInfo.hasExtension("GL_ARB_texture_rectangle")) {