[C++11] Replacing ObjCContainerDecl iterators instmeth_begin() and instmeth_end() with iterator_range instance_methods(). Updating all of the usages of the iterators with range-based for loops.

llvm-svn: 203839
diff --git a/clang/lib/ARCMigrate/Transforms.cpp b/clang/lib/ARCMigrate/Transforms.cpp
index 274c025..3649d38 100644
--- a/clang/lib/ARCMigrate/Transforms.cpp
+++ b/clang/lib/ARCMigrate/Transforms.cpp
@@ -538,15 +538,12 @@
   impl_iterator;
   for (impl_iterator I = impl_iterator(DC->decls_begin()),
        E = impl_iterator(DC->decls_end()); I != E; ++I) {
-    for (ObjCImplementationDecl::instmeth_iterator
-         MI = I->instmeth_begin(),
-         ME = I->instmeth_end(); MI != ME; ++MI) {
-      ObjCMethodDecl *MD = *MI;
+    for (const auto *MD : I->instance_methods()) {
       if (!MD->hasBody())
         continue;
       
       if (MD->isInstanceMethod() && MD->getSelector() == FinalizeSel) {
-        ObjCMethodDecl *FinalizeM = MD;
+        const ObjCMethodDecl *FinalizeM = MD;
         Transaction Trans(TA);
         TA.insert(FinalizeM->getSourceRange().getBegin(), 
                   "#if !__has_feature(objc_arc)\n");