Rename method RegisterExtendedInstructionImports

Bug: tint:3
Change-Id: If92bd97f9a71bd676ba40430fd736cf721c38747
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/17360
Reviewed-by: dan sinclair <dsinclair@google.com>

src/reader/spirv/parser_impl.cc

@@ -120,11 +120,11 @@ void ParserImpl::ResetInternalModule() {
 }
 
 bool ParserImpl::ParseInternalModule() {
-  return ParseExtendedInstructionImports();
+  return RegisterExtendedInstructionImports();
   // TODO(dneto): fill in the rest
 }
 
-bool ParserImpl::ParseExtendedInstructionImports() {
+bool ParserImpl::RegisterExtendedInstructionImports() {
   for (const spvtools::opt::Instruction& import : module_->ext_inst_imports()) {
     std::string name(
         reinterpret_cast<const char*>(import.GetInOperand(0).words.data()));

src/reader/spirv/parser_impl.h

@@ -96,8 +96,8 @@ class ParserImpl : Reader {
   /// Destroys the internal representation of the SPIR-V module.
   void ResetInternalModule();
 
-  /// Parses OpExtInstImport instructions.
-  bool ParseExtendedInstructionImports();
+  /// Registers extended instruction imports.  Only "GLSL.std.450" is supported.
+  bool RegisterExtendedInstructionImports();
 
   // The SPIR-V binary we're parsing
   std::vector<uint32_t> spv_binary_;