Add preliminary support for text rendering.

Change-Id: I547eb631dbda24d13960d54b4144fb8908fd8a49
diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
index dd7999d..9dc2a43 100644
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -287,6 +287,11 @@
     inline void getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode);
 
     /**
+     * Binds the specified texture with the specified wrap modes.
+     */
+    inline void bindTexture(GLuint texture, GLenum wrapS, GLenum wrapT);
+
+    /**
      * Enable or disable blending as necessary. This function sets the appropriate
      * blend function based on the specified xfermode.
      */
@@ -341,8 +346,8 @@
     ShaderType mShader;
     SkShader* mShaderKey;
     bool mShaderBlend;
-    SkShader::TileMode mShaderTileX;
-    SkShader::TileMode mShaderTileY;
+    GLenum mShaderTileX;
+    GLenum mShaderTileY;
     SkMatrix* mShaderMatrix;
     // Bitmaps
     SkBitmap* mShaderBitmap;