Add text rendering.

Change-Id: Ibe5a9fa844d531b31b55e43de403a98d49f659b9
diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index 18a8e92..824aa05 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -167,6 +167,7 @@
 class DrawTextureProgram: public DrawColorProgram {
 public:
     DrawTextureProgram();
+    DrawTextureProgram(const char* vertex, const char* fragment);
 
     /**
      * Binds this program to the GL context.
@@ -190,6 +191,11 @@
     int texCoords;
 };
 
+class DrawTextProgram: public DrawTextureProgram {
+public:
+    DrawTextProgram();
+};
+
 /**
  * Program used to draw linear gradients. In addition to everything that the
  * DrawColorProgram supports, the following two attributes must be specified: