Change @import to @__experimental_modules_import.  We are not ready to commit to a particular syntax for modules,
and don't have time to push it forward in the near future.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151841 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index 96dfe36..b6ea65d 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -565,13 +565,13 @@
   if (II.isExtensionToken() && !DisableMacroExpansion)
     Diag(Identifier, diag::ext_token_used);
   
-  // If this is the 'import' contextual keyword, note that the next token 
-  // indicates a module name.
+  // If this is the '__experimental_modules_import' contextual keyword, note
+  // that the next token indicates a module name.
   //
-  // Note that we do not treat 'import' as a contextual keyword when we're
-  // in a caching lexer, because caching lexers only get used in contexts where
-  // import declarations are disallowed.
-  if (II.isImport() && !InMacroArgs && !DisableMacroExpansion &&
+  // Note that we do not treat '__experimental_modules_import' as a contextual
+  // keyword when we're in a caching lexer, because caching lexers only get
+  // used in contexts where import declarations are disallowed.
+  if (II.isModulesImport() && !InMacroArgs && !DisableMacroExpansion &&
       getLangOptions().Modules && CurLexerKind != CLK_CachingLexer) {
     ModuleImportLoc = Identifier.getLocation();
     ModuleImportPath.clear();