Change roots view to "rooted".

Instead of just showing roots in the roots view, show all objects
whose immediate dominator is the SENTINEL_ROOT.

Bug: 24613815
Change-Id: I96429d75395edfe109222e88d31cdc0bd87a7767
diff --git a/tools/ahat/src/RootedHandler.java b/tools/ahat/src/RootedHandler.java
new file mode 100644
index 0000000..ec3272f
--- /dev/null
+++ b/tools/ahat/src/RootedHandler.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.ahat;
+
+import java.io.IOException;
+
+class RootedHandler implements AhatHandler {
+
+  private static final String ROOTED_ID = "rooted";
+
+  private AhatSnapshot mSnapshot;
+
+  public RootedHandler(AhatSnapshot snapshot) {
+    mSnapshot = snapshot;
+  }
+
+  @Override
+  public void handle(Doc doc, Query query) throws IOException {
+    doc.title("Rooted");
+    DominatedList.render(mSnapshot, doc, query, ROOTED_ID, mSnapshot.getRooted());
+  }
+}