(client) Return Tree instead of Path

Summary:
- Add return parameter to `createTouch` method: stack of node. This reference will be used to retrieve the final tree structure to be sent back to desktop app.
- `Touch` now keeps every step in component tree (I have concerned for app performance here)
- Edit test to reflect changes

Note:
- `path` will also be returned to keep backward compatibility with older server (desktop) side

Reviewed By: adityasharat

Differential Revision: D21040429

fbshipit-source-id: 6c2b9792378bf08b19fbbda1d2381df8c357170c

android/src/test/java/com/facebook/flipper/plugins/inspector/InspectorFlipperPluginTest.java

@@ -269,9 +269,20 @@ public class InspectorFlipperPluginTest {
         connection.sent.get("select"),
         hasItem(
             new FlipperObject.Builder()
+                .put(
+                    "tree",
+                    new FlipperObject.Builder()
+                        .put(
+                            "com.facebook.flipper",
+                            new FlipperObject.Builder()
+                                .put(
+                                    "test",
+                                    new FlipperObject.Builder()
+                                        .put("3", new FlipperObject.Builder())
+                                        .put("1", new FlipperObject.Builder()))))
                 .put(
                     "path",
-                    new FlipperArray.Builder().put("com.facebook.flipper").put("test").put("3"))
+                    new FlipperArray.Builder().put("com.facebook.flipper").put("test").put("1"))
                 .build()));
   }
 
@@ -391,16 +402,17 @@ public class InspectorFlipperPluginTest {
 
     @Override
     public void hitTest(TestNode node, Touch touch) {
+      boolean finish = true;
       for (int i = node.children.size() - 1; i >= 0; i--) {
         final TestNode child = node.children.get(i);
         final Rect bounds = child.bounds;
         if (touch.containedIn(bounds.left, bounds.top, bounds.right, bounds.bottom)) {
           touch.continueWithOffset(i, bounds.left, bounds.top);
-          return;
+          finish = false;
         }
       }
 
-      touch.finish();
+      if (finish) touch.finish();
     }
 
     @Override