renamed SkSL types in preparation for killing precision modifiers

Bug: skia:
Change-Id: Iff0289e25355a89cdc289a0892ed755dd1b1c900
Reviewed-on: https://skia-review.googlesource.com/27703
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/tests/GrMeshTest.cpp b/tests/GrMeshTest.cpp
index 922a996..288c057 100644
--- a/tests/GrMeshTest.cpp
+++ b/tests/GrMeshTest.cpp
@@ -327,20 +327,20 @@
 
         GrGLSLVertexBuilder* v = args.fVertBuilder;
         if (!mp.fInstanceLocation) {
-            v->codeAppendf("vec2 vertex = %s;", mp.fVertex->fName);
+            v->codeAppendf("float2 vertex = %s;", mp.fVertex->fName);
         } else {
             if (mp.fVertex) {
-                v->codeAppendf("vec2 offset = %s;", mp.fVertex->fName);
+                v->codeAppendf("float2 offset = %s;", mp.fVertex->fName);
             } else {
-                v->codeAppend ("vec2 offset = vec2(sk_VertexID / 2, sk_VertexID % 2);");
+                v->codeAppend ("float2 offset = float2(sk_VertexID / 2, sk_VertexID % 2);");
             }
-            v->codeAppendf("vec2 vertex = %s + offset * %i;",
+            v->codeAppendf("float2 vertex = %s + offset * %i;",
                            mp.fInstanceLocation->fName, kBoxSize);
         }
         gpArgs->fPositionVar.set(kVec2f_GrSLType, "vertex");
 
         GrGLSLPPFragmentBuilder* f = args.fFragBuilder;
-        f->codeAppendf("%s = vec4(1);", args.fOutputCoverage);
+        f->codeAppendf("%s = float4(1);", args.fOutputCoverage);
     }
 };