Move GrTextContext to private interface

include/gpu/SkGpuDevice.h

Index: include/gpu/SkGpuDevice.h
diff --git a/include/gpu/SkGpuDevice.h b/include/gpu/SkGpuDevice.h
index addf6786545263a925529174d41de68ef021c657..bfcdba3fddc63da1d278dc72a7b3583d22f3f955 100644
--- a/include/gpu/SkGpuDevice.h
+++ b/include/gpu/SkGpuDevice.h
@@ -16,11 +16,12 @@
 #include "SkBitmapDevice.h"
 #include "SkRegion.h"
 #include "GrContext.h"
-#include "GrTextContext.h"
 
 struct SkDrawProcs;
 struct GrSkDrawProcs;
 
+class GrTextContextManager;
+
 /**
  *  Subclass of SkBitmapDevice, which directs all drawing to the GrGpu owned by the
  *  canvas.
@@ -208,11 +209,6 @@ private:
                          int tileSize,
                          bool bicubic);
 
-    /**
-     * Returns non-initialized instance.
-     */
-    GrTextContext* getTextContext();
-
     typedef SkBitmapDevice INHERITED;
 };