Change the name to something less terrible; suggestion by Doug. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109797 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 633538f..ef1138e 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -5543,7 +5543,7 @@
   return GVA_StrongExternal;
 }
 
-bool ASTContext::DeclIsRequiredFunctionOrFileScopedVar(const Decl *D) {
+bool ASTContext::DeclMustBeEmitted(const Decl *D) {
   if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
     if (!VD->isFileVarDecl())
       return false;