import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

build/clang-plugin/tests/TestNoExplicitMoveConstructor.cpp

@@ -0,0 +1,25 @@
+class Foo {
+  Foo(Foo&& f);
+};
+
+class Bar {
+  explicit Bar(Bar&& f); // expected-error {{Move constructors may not be marked explicit}}
+};
+
+class Baz {
+  template<typename T>
+  explicit Baz(T&& f) {};
+};
+
+class Quxx {
+  Quxx();
+  Quxx(Quxx& q) = delete;
+  template<typename T>
+  explicit Quxx(T&& f) {};
+};
+
+void f() {
+  // Move a quxx into a quxx! (This speciailizes Quxx's constructor to look like
+  // a move constructor - to make sure it doesn't trigger)
+  Quxx(Quxx());
+}