Align drag feedback for links with draggable="true" to Safari.

third_party/WebKit/LayoutTests/fast/dnd/resources/link-dragging-common.css

+body.test-runner {
+  font: 10px Ahem;
+}
+
+article {
+  position: relative;
+  overflow: hidden;
+}
+
+/* a needs to precede .dragged, because the cursor rules depend on the .dragged
+   block being more specific than the a block. */
+a {
+  display: block;
+
+  /* Intended to help manual testers not accidentally drag the text when we
+     expect them to drag the containing box. */
+  cursor: not-allowed;
+}
+
+.box {
+  display: block;
+  border: 1px solid black;
+  width: 150px;
+  height: 100px;
+  margin: 10px;
+  float: left;
+}
+.dragged {
+  background-color: hsla(120, 50%, 70%, 1);
+  cursor: pointer;
+}
+.dropzone {
+  border-style: dashed;
+}