Rewrite most of the scopers in //base/mac to use ScopedTypeRef or ScopedGeneric.

base/mac/scoped_launch_data.h

Index: base/mac/scoped_launch_data.h
diff --git a/base/mac/scoped_launch_data.h b/base/mac/scoped_launch_data.h
index c2bb31efbe6982d36987006784a766acd718dd7f..da62006bfb25367767cdd95737d3d4aed274e8a4 100644
--- a/base/mac/scoped_launch_data.h
+++ b/base/mac/scoped_launch_data.h
@@ -7,67 +7,23 @@
 
 #include <launch.h>
 
-#include <algorithm>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
+#include "base/scoped_generic.h"
 
 namespace base {
 namespace mac {
 
-// Just like scoped_ptr<> but for launch_data_t.
-class ScopedLaunchData {
- public:
-  typedef launch_data_t element_type;
-
-  explicit ScopedLaunchData(launch_data_t object = NULL)
-      : object_(object) {
-  }
-
-  ~ScopedLaunchData() {
-    if (object_)
-      launch_data_free(object_);
-  }
-
-  void reset(launch_data_t object = NULL) {
-    if (object != object_) {
-      if (object_)
-        launch_data_free(object_);
-      object_ = object;
-    }
-  }
-
-  bool operator==(launch_data_t that) const {
-    return object_ == that;
-  }
-
-  bool operator!=(launch_data_t that) const {
-    return object_ != that;
-  }
+namespace internal {
 
-  operator launch_data_t() const {
-    return object_;
-  }
-
-  launch_data_t get() const {
-    return object_;
-  }
-
-  void swap(ScopedLaunchData& that) {
-    std::swap(object_, that.object_);
-  }
-
-  launch_data_t release() WARN_UNUSED_RESULT {
-    launch_data_t temp = object_;
-    object_ = NULL;
-    return temp;
-  }
+struct ScopedLaunchDataTraits {
+  static launch_data_t InvalidValue() { return nullptr; }
+  static void Free(launch_data_t ldt) { launch_data_free(ldt); }

[Mark Mentovai, 2016/01/06 16:22:58]

I had to ignore -Wdeprecated-declarations to use launch_data_free in
mini_chromium:

https://codereview.chromium.org/1565803002/diff/1/base/mac/scoped_launch_data...

because you get the system SDK and deployment target by default with
mini_chromium.

+};
 
- private:
-  launch_data_t object_;
+}  // namespace internal
 
-  DISALLOW_COPY_AND_ASSIGN(ScopedLaunchData);
-};
+// Just like scoped_ptr<> but for launch_data_t.
+using ScopedLaunchData =
+    ScopedGeneric<launch_data_t, internal::ScopedLaunchDataTraits>;
 
 }  // namespace mac
 }  // namespace base