Enable MD by default on Windows for Canary/Dev and local builds.

ui/base/resource/resource_bundle.h

Index: ui/base/resource/resource_bundle.h
diff --git a/ui/base/resource/resource_bundle.h b/ui/base/resource/resource_bundle.h
index df812b1f14c0791a8fa40b508da0aae44666cb61..b2ac9d2bcb706556956dea0266a734752a70d4c4 100644
--- a/ui/base/resource/resource_bundle.h
+++ b/ui/base/resource/resource_bundle.h
@@ -116,6 +116,29 @@ class UI_BASE_EXPORT ResourceBundle {
     virtual ~Delegate() {}
   };
 
+  // A class which is designed to be instantiated on the stack during early
+  // startup code that needs access to string resources before the
+  // ResourceBundle may be loaded.
+  //
+  // This incurs a performance hit, so this should only be used in exceptional
+  // circumstances.  Most uses of resources should wait until after the
+  // ResourceBundle has been loaded properly.
+  class UI_BASE_EXPORT TemporaryLoader {
+   public:
+    TemporaryLoader();
+    ~TemporaryLoader();
+
+   private:
+    // Mac loads resources earlier than other platforms and thus may have
+    // already initialized the resource bundle when we're constructed.  Instead
+    // of trying to ifdef Mac or otherwise define exactly when we should and
+    // shouldn't load, we just set this based on whether the shared instance
+    // exists and then do nothing if it's set.
+    bool already_loaded_;
+
+    DISALLOW_COPY_AND_ASSIGN(TemporaryLoader);
+  };
+
   // Initialize the ResourceBundle for this process. Does not take ownership of
   // the |delegate| value. Returns the language selected.
   // NOTE: Mac ignores this and always loads up resources for the language