upload android base code part3

android/art/runtime/java_frame_root_info.cc

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#include "java_frame_root_info.h"
+
+#include "stack.h"
+
+namespace art {
+
+void JavaFrameRootInfo::Describe(std::ostream& os) const {
+  const StackVisitor* visitor = stack_visitor_;
+  CHECK(visitor != nullptr);
+  os << "Type=" << GetType() << " thread_id=" << GetThreadId() << " location=" <<
+      visitor->DescribeLocation() << " vreg=" << vreg_;
+}
+
+}  // namespace art