Add support to draw 9patches in OpenGL.

This change only adds the necessary API and stubs. The implementation
will be added in another change.

Change-Id: Ie50b8aff5868e78796cee331df15bdbf990d2ea1
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 304af2e..ae7719c 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -35,7 +35,7 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 // Debug
-#define DEBUG_LAYERS 1
+#define DEBUG_LAYERS 0
 
 // These properties are defined in mega-bytes
 #define PROPERTY_TEXTURE_CACHE_SIZE "ro.hwui.texture_cache_size"
@@ -521,6 +521,12 @@
     resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
 }
 
+void OpenGLRenderer::drawPatch(SkBitmap* bitmap, Res_png_9patch* patch,
+        float left, float top, float right, float bottom, const SkPaint* paint) {
+    // TODO: Implement
+    LOGD("Draw 9patch, paddingLeft=%d", patch->paddingLeft);
+}
+
 void OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) {
     const Rect& clip = mSnapshot->clipRect;
     drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode);