Implement diff for SurfaceFlinger and WindowManager hierarchy

Test: N/A
Change-Id: I3dea4f29de74a8754cf3164d41c7eb3d76c239a8

tools/winscope/src/TreeView.vue

@@ -123,6 +123,7 @@ export default {
         [DiffType.ADDED]: "+",
         [DiffType.DELETED]: "-",
         [DiffType.MODIFIED]: ".",
+        [DiffType.MOVED]: ".",
       },
     };
   },
@@ -350,7 +351,7 @@ export default {
   background: chartreuse;
 }
 
-.tree-view .node:not(.selected).removed {
+.tree-view .node:not(.selected).deleted {
   background: coral;
 }
 
@@ -358,6 +359,11 @@ export default {
   background: cyan;
 }
 
+.tree-view .node:not(.selected).addedMove, 
+.tree-view .node:not(.selected).deletedMove {
+  background: slateblue;
+}
+
 .children {
   /* Aligns border with collapse arrows */
   margin-left: 12px;