Revert of added support for PLS path rendering

include/gpu/GrShaderVar.h

Index: include/gpu/GrShaderVar.h
diff --git a/include/gpu/GrShaderVar.h b/include/gpu/GrShaderVar.h
index 3f56eaf70acb9e2245592361e84a2a14b149c91f..68ce34b8ef8d0520dee17d577711597eb5d740c4 100644
--- a/include/gpu/GrShaderVar.h
+++ b/include/gpu/GrShaderVar.h
@@ -51,7 +51,7 @@ public:
         , fName(name)
         , fCount(arrayCount)
         , fPrecision(precision) {
-        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsNumeric(type));
+        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
         SkASSERT(kVoid_GrSLType != type);
     }
 
@@ -62,7 +62,7 @@ public:
         , fName(name)
         , fCount(arrayCount)
         , fPrecision(precision) {
-        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsNumeric(type));
+        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
         SkASSERT(kVoid_GrSLType != type);
     }
 
@@ -73,7 +73,7 @@ public:
         , fName(name)
         , fCount(arrayCount)
         , fPrecision(precision) {
-        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsNumeric(type));
+        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
         SkASSERT(kVoid_GrSLType != type);
     }
 
@@ -91,7 +91,7 @@ public:
              GrSLPrecision precision = kDefault_GrSLPrecision,
              int count = kNonArray) {
         SkASSERT(kVoid_GrSLType != type);
-        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsNumeric(type));
+        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
         fType = type;
         fTypeModifier = typeModifier;
         fName = name;
@@ -105,7 +105,7 @@ public:
              GrSLPrecision precision = kDefault_GrSLPrecision,
              int count = kNonArray) {
         SkASSERT(kVoid_GrSLType != type);
-        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsNumeric(type));
+        SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeIsFloatType(type));
         fType = type;
         fTypeModifier = typeModifier;
         fName = name;