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/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index 19481ac..a29bca3 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -226,11 +226,11 @@
     const char* func;
     switch (me.type()) {
         case GrMorphologyEffect::Type::kErode:
-            fragBuilder->codeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", args.fOutputColor);
+            fragBuilder->codeAppendf("\t\t%s = float4(1, 1, 1, 1);\n", args.fOutputColor);
             func = "min";
             break;
         case GrMorphologyEffect::Type::kDilate:
-            fragBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", args.fOutputColor);
+            fragBuilder->codeAppendf("\t\t%s = float4(0, 0, 0, 0);\n", args.fOutputColor);
             func = "max";
             break;
         default:
@@ -254,8 +254,8 @@
 
     int width = me.width();
 
-    // vec2 coord = coord2D;
-    fragBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
+    // float2 coord = coord2D;
+    fragBuilder->codeAppendf("\t\tfloat2 coord = %s;\n", coords2D.c_str());
     // coord.x -= radius * pixelSize;
     fragBuilder->codeAppendf("\t\tcoord.%s -= %d.0 * %s; \n", dir, me.radius(), pixelSizeInc);
     if (me.useRange()) {