as a debug option SrufaceFlinger can now connect to DDMS

this is disabled by default. To enable:
  setprop debug.sf.ddms 1

this debug option requires to restart SurfaceFlinger

Change-Id: Ic2f8050b29911b55bcd21721648b6978700c277d
diff --git a/services/surfaceflinger/DdmConnection.h b/services/surfaceflinger/DdmConnection.h
new file mode 100644
index 0000000..91b737c
--- /dev/null
+++ b/services/surfaceflinger/DdmConnection.h
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_SF_DDM_CONNECTION
+#define ANDROID_SF_DDM_CONNECTION
+
+namespace android {
+
+class DdmConnection {
+public:
+    static void start(const char* name);
+};
+
+}; // namespace android
+
+#endif /* ANDROID_SF_DDM_CONNECTION */