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/tests/EGLImageTest.cpp b/tests/EGLImageTest.cpp
index 8229362..f78a0ea 100644
--- a/tests/EGLImageTest.cpp
+++ b/tests/EGLImageTest.cpp
@@ -92,7 +92,7 @@
         return;
     }
     GrGLGpu* gpu0 = static_cast<GrGLGpu*>(context0->getGpu());
-    if (!gpu0->glCaps().glslCaps()->externalTextureSupport()) {
+    if (!gpu0->glCaps().shaderCaps()->externalTextureSupport()) {
         return;
     }