Index: cfe/trunk/lib/AST/ASTImporter.cpp
===================================================================
--- cfe/trunk/lib/AST/ASTImporter.cpp
+++ cfe/trunk/lib/AST/ASTImporter.cpp
@@ -2553,26 +2553,6 @@
             Decl::FOK_None;
   }
 
-  // If this record has a definition in the translation unit we're coming from,
-  // but this particular declaration is not that definition, import the
-  // definition and map to that.
-  TagDecl *Definition = D->getDefinition();
-  if (Definition && Definition != D &&
-      // Friend template declaration must be imported on its own.
-      !IsFriendTemplate &&
-      // In contrast to a normal CXXRecordDecl, the implicit
-      // CXXRecordDecl of ClassTemplateSpecializationDecl is its redeclaration.
-      // The definition of the implicit CXXRecordDecl in this case is the
-      // ClassTemplateSpecializationDecl itself. Thus, we start with an extra
-      // condition in order to be able to import the implict Decl.
-      !D->isImplicit()) {
-    ExpectedDecl ImportedDefOrErr = import(Definition);
-    if (!ImportedDefOrErr)
-      return ImportedDefOrErr.takeError();
-
-    return Importer.MapImported(D, *ImportedDefOrErr);
-  }
-
   // Import the major distinguishing characteristics of this record.
   DeclContext *DC, *LexicalDC;
   DeclarationName Name;
@@ -2601,7 +2581,8 @@
     auto FoundDecls =
         Importer.findDeclsInToCtx(DC, SearchName);
     if (!FoundDecls.empty()) {
-      // We're going to have to compare D against potentially conflicting Decls, so complete it.
+      // We're going to have to compare D against potentially conflicting Decls,
+      // so complete it.
       if (D->hasExternalLexicalStorage() && !D->isCompleteDefinition())
         D->getASTContext().getExternalSource()->CompleteType(D);
     }
@@ -4976,17 +4957,6 @@
 ExpectedDecl ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
   bool IsFriend = D->getFriendObjectKind() != Decl::FOK_None;
 
-  // If this template has a definition in the translation unit we're coming
-  // from, but this particular declaration is not that definition, import the
-  // definition and map to that.
-  ClassTemplateDecl *Definition = getDefinition(D);
-  if (Definition && Definition != D && !IsFriend) {
-    if (ExpectedDecl ImportedDefOrErr = import(Definition))
-      return Importer.MapImported(D, *ImportedDefOrErr);
-    else
-      return ImportedDefOrErr.takeError();
-  }
-
   // Import the major distinguishing characteristics of this class template.
   DeclContext *DC, *LexicalDC;
   DeclarationName Name;
Index: cfe/trunk/unittests/AST/ASTImporterTest.cpp
===================================================================
--- cfe/trunk/unittests/AST/ASTImporterTest.cpp
+++ cfe/trunk/unittests/AST/ASTImporterTest.cpp
@@ -4241,8 +4241,7 @@
 
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Function, ,
                                         ImportDefinitionAfterImportedPrototype)
-// FIXME This does not pass, possible error with Class import.
-ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Class, DISABLED_,
+ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Class, ,
                                         ImportDefinitionAfterImportedPrototype)
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Variable, ,
                                         ImportDefinitionAfterImportedPrototype)
@@ -4250,16 +4249,14 @@
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, FunctionTemplate,
                                         DISABLED_,
                                         ImportDefinitionAfterImportedPrototype)
-// FIXME This does not pass, possible error with ClassTemplate import.
-ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, ClassTemplate, DISABLED_,
+ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, ClassTemplate, ,
                                         ImportDefinitionAfterImportedPrototype)
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, FunctionTemplateSpec, ,
                                         ImportDefinitionAfterImportedPrototype)
 
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Function, ,
                                         ImportPrototypeAfterImportedDefinition)
-// FIXME This does not pass, possible error with Class import.
-ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Class, DISABLED_,
+ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Class, ,
                                         ImportPrototypeAfterImportedDefinition)
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, Variable, ,
                                         ImportPrototypeAfterImportedDefinition)
@@ -4267,8 +4264,7 @@
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, FunctionTemplate,
                                         DISABLED_,
                                         ImportPrototypeAfterImportedDefinition)
-// FIXME This does not pass, possible error with ClassTemplate import.
-ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, ClassTemplate, DISABLED_,
+ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, ClassTemplate, ,
                                         ImportPrototypeAfterImportedDefinition)
 ASTIMPORTER_INSTANTIATE_TYPED_TEST_CASE(RedeclChain, FunctionTemplateSpec, ,
                                         ImportPrototypeAfterImportedDefinition)