Rename vars and functions from 'glslcaps'->'shadercaps'

Change-Id: I34d226d866dd4ba8e5f33f95cb8cbf01292f9314
Reviewed-on: https://skia-review.googlesource.com/5312
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/effects/GrMatrixConvolutionEffect.cpp b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
index 5e4dc26..96f7014 100644
--- a/src/gpu/effects/GrMatrixConvolutionEffect.cpp
+++ b/src/gpu/effects/GrMatrixConvolutionEffect.cpp
@@ -83,7 +83,7 @@
             coord.printf("coord + vec2(%d, %d) * %s", x, y, imgInc);
             fDomain.sampleTexture(fragBuilder,
                                   uniformHandler,
-                                  args.fGLSLCaps,
+                                  args.fShaderCaps,
                                   domain,
                                   "c",
                                   coord,
@@ -102,7 +102,7 @@
     } else {
         fDomain.sampleTexture(fragBuilder,
                               uniformHandler,
-                              args.fGLSLCaps,
+                              args.fShaderCaps,
                               domain,
                               "c",
                               coords2D,