fixme-desc: add some stubs

src/api-impl/android/os/Debug.java

@@ -0,0 +1,15 @@
+package android.os;
+public final class Debug
+{
+    public static class MemoryInfo {
+    }
+    /**
+     * Wait until a debugger attaches.  As soon as the debugger attaches,
+     * this returns, so you will need to place a breakpoint after the
+     * waitForDebugger() call if you want to start tracing immediately.
+     */
+    public static class InstructionCount {
+        public InstructionCount() {
+        }
+    }
+}