Move share() into AnnotationController

Move scope.share() from the annotation directive to vm.share() in
the AnnotationController. Just trying to move as much as possible out of
the directive's scope and link function into the controller, if we're
gonna use a directive controller here try to just use it instead of
randomly using the link function and scope for some things and the
controller for others.

h/static/scripts/directive/annotation.js

@@ -263,6 +263,19 @@ function AnnotationController(
     }
   };
 
+  vm.share = function(event) {
+    var $container = angular.element(event.currentTarget).parent();
+    $container.addClass('open').find('input').focus().select();
+
+    // We have to stop propagation here otherwise this click event will
+    // re-close the share dialog immediately.
+    event.stopPropagation();
+
+    $document.one('click', function() {
+      $container.removeClass('open');
+    });
+  };
+
   /**
     * @ngdoc method
     * @name annotation.AnnotaitonController#hasContent
@@ -645,19 +658,6 @@ function annotation($document, features) {
     // Give template access to feature flags.
     scope.feature = features.flagEnabled;
 
-    scope.share = function(event) {
-      var $container = angular.element(event.currentTarget).parent();
-      $container.addClass('open').find('input').focus().select();
-
-      // We have to stop propagation here otherwise this click event will
-      // re-close the share dialog immediately.
-      event.stopPropagation();
-
-      $document.one('click', function() {
-        $container.removeClass('open');
-      });
-    };
-
     // Keep track of edits going on in the thread.
     if (counter !== null) {
       // Expand the thread if descendants are editing.

h/templates/client/annotation.html

@@ -141,7 +141,7 @@
               ><i class="h-icon-reply btn-icon"></i> Reply</button>
       <span class="share-dialog-wrapper">
         <button class="small btn btn-clean"
-                ng-click="share($event)"
+                ng-click="vm.share($event)"
                 ><i class="h-icon-link btn-icon"></i> Link</button>
         <span class="share-dialog" ng-click="$event.stopPropagation()">
           <a target="_blank"