minor SkSL changes to avoid compiler errors in Chromium

src/sksl/SkSLGLSLCodeGenerator.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
  
 #include "SkSLGLSLCodeGenerator.h"
 
 #include "string.h"
@@ skipping 50 matching lines @@
                 this->write(type.name());
                 return;
             }
         }
         fWrittenStructs.push_back(&type);
         this->writeLine("struct " + type.name() + " {");
         fIndentation++;
         for (const auto& f : type.fields()) {
             this->writeModifiers(f.fModifiers);
             // sizes (which must be static in structs) are part of the type name here
-            this->writeType(f.fType);
+            this->writeType(*f.fType);
             this->writeLine(" " + f.fName + ";");
         }
         fIndentation--;
         this->writeLine("}");
     } else {
         this->write(type.name());
     }
 }
 
 void GLSLCodeGenerator::writeExpression(const Expression& expr, Precedence parentPrecedence) {
@@ skipping 217 matching lines @@
 
 void GLSLCodeGenerator::writeInterfaceBlock(const InterfaceBlock& intf) {
     if (intf.fVariable.fName == "gl_PerVertex") {
         return;
     }
     this->writeModifiers(intf.fVariable.fModifiers);
     this->writeLine(intf.fVariable.fType.name() + " {");
     fIndentation++;
     for (const auto& f : intf.fVariable.fType.fields()) {
         this->writeModifiers(f.fModifiers);
-        this->writeType(f.fType);
+        this->writeType(*f.fType);
         this->writeLine(" " + f.fName + ";");
     }
     fIndentation--;
     this->writeLine("};");
 }
 
 void GLSLCodeGenerator::writeVarDeclaration(const VarDeclaration& decl) {
     ASSERT(decl.fVars.size() > 0);
     this->writeModifiers(decl.fVars[0]->fModifiers);
     this->writeType(decl.fBaseType);
@@ skipping 150 matching lines @@
                 break;
             default:
                 printf("%s\n", e->description().c_str());
                 ABORT("unsupported program element");
         }
     }
     fOut = nullptr;
 }
 
 }