Import Cobalt 19.master.0.203780

Includes the following patches:
  https://cobalt-review.googlesource.com/c/cobalt/+/5210
    by errong.leng@samsung.com
  https://cobalt-review.googlesource.com/c/cobalt/+/5270
    by linus.wang@samsung.com
diff --git a/src/third_party/llvm-project/clang/test/Rewriter/objc-modern-StretAPI-3.mm b/src/third_party/llvm-project/clang/test/Rewriter/objc-modern-StretAPI-3.mm
new file mode 100644
index 0000000..3ada56e
--- /dev/null
+++ b/src/third_party/llvm-project/clang/test/Rewriter/objc-modern-StretAPI-3.mm
@@ -0,0 +1,58 @@
+// RUN: %clang_cc1 -x objective-c++ -fblocks -fms-extensions -rewrite-objc %s -o %t-rw.cpp
+// RUN: %clang_cc1 -fsyntax-only -fblocks -Wno-address-of-temporary -D"Class=void*" -D"id=void*" -D"SEL=void*" -D"__declspec(X)=" %t-rw.cpp
+// rdar://14932320
+
+extern "C" void *sel_registerName(const char *);
+typedef unsigned long size_t;
+
+typedef struct {
+    unsigned long long x;
+    unsigned long long y;
+} myPoint;
+
+typedef struct {
+    unsigned long long x;
+    unsigned long long y;
+} allPoint;
+
+@interface Obj
++ (myPoint)foo;
++ (myPoint)foo : (int)Arg1 : (double)fArg;
++ (allPoint)fee;
+@end
+
+@implementation Obj
++ (allPoint)fee {
+    allPoint a;
+    a.x = a.y = 3;
+    
+    return a;
+}
++ (myPoint)foo {
+    myPoint r;
+    r.x = 1;
+    r.y = 2;
+    return r;
+}
+
++ (myPoint)foo : (int)Arg1 : (double)fArg {
+  myPoint r;
+  return r;
+}
+@end
+
+myPoint Ret_myPoint() {
+  return [Obj foo];
+}
+
+allPoint Ret_allPoint() {
+  return [Obj fee];
+}
+
+myPoint Ret_myPoint1(int i, double d) {
+  return [Obj foo:i:d];
+}
+
+myPoint Ret_myPoint2() {
+  return [Obj foo];
+}