repro for crbug.com/663886

base/callback_helpers.cc

Index: base/callback_helpers.cc
diff --git a/base/callback_helpers.cc b/base/callback_helpers.cc
index 838e6c8d849526076de0a72a63df5feda0c6e0cb..2ab95592f0526e0a1589ff3d21e0ac1bd2333c82 100644
--- a/base/callback_helpers.cc
+++ b/base/callback_helpers.cc
@@ -7,40 +7,4 @@
 #include "base/callback.h"
 
 namespace base {
-
-ScopedClosureRunner::ScopedClosureRunner() {}
-
-ScopedClosureRunner::ScopedClosureRunner(const Closure& closure)
-    : closure_(closure) {}
-
-ScopedClosureRunner::~ScopedClosureRunner() {
-  if (!closure_.is_null())
-    closure_.Run();
-}
-
-ScopedClosureRunner::ScopedClosureRunner(ScopedClosureRunner&& other)
-    : closure_(other.Release()) {}
-
-ScopedClosureRunner& ScopedClosureRunner::operator=(
-    ScopedClosureRunner&& other) {
-  ReplaceClosure(other.Release());
-  return *this;
-}
-
-void ScopedClosureRunner::RunAndReset() {
-  Closure old_closure = Release();
-  if (!old_closure.is_null())
-    old_closure.Run();
-}
-
-void ScopedClosureRunner::ReplaceClosure(const Closure& closure) {
-  closure_ = closure;
-}
-
-Closure ScopedClosureRunner::Release() {
-  Closure result = closure_;
-  closure_.Reset();
-  return result;
-}
-
 }  // namespace base