Add GrRenderTarget parameter to GrTextContext::canDraw

src/gpu/GrDistanceFieldTextContext.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDistanceFieldTextContext_DEFINED
 #define GrDistanceFieldTextContext_DEFINED
 
@@ skipping 33 matching lines @@
     void*                              fVertices;
     int                                fCurrVertex;
     int                                fAllocVertexCount;
     int                                fTotalVertexCount;
     GrTexture*                         fCurrTexture;
     SkRect                             fVertexBounds;
     SkMatrix                           fViewMatrix;
 
     GrDistanceFieldTextContext(GrContext*, SkGpuDevice*, const SkDeviceProperties&, bool enable);
 
-    bool canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) SK_OVERRIDE;
+    bool canDraw(const GrRenderTarget*, const GrClip&, const GrPaint&,
+                 const SkPaint&, const SkMatrix& viewMatrix) SK_OVERRIDE;
 
-    virtual void onDrawText(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
-                            const SkMatrix& viewMatrix,
-                            const char text[], size_t byteLength,
-                            SkScalar x, SkScalar y, const SkIRect& regionClipBounds) SK_OVERRIDE;
-    virtual void onDrawPosText(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
-                               const SkMatrix& viewMatrix,
-                               const char text[], size_t byteLength,
-                               const SkScalar pos[], int scalarsPerPosition,
-                               const SkPoint& offset, const SkIRect& regionClipBounds) SK_OVERRIDE;
+    void onDrawText(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
+                    const SkMatrix& viewMatrix,
+                    const char text[], size_t byteLength,
+                    SkScalar x, SkScalar y, const SkIRect& regionClipBounds) SK_OVERRIDE;
+    void onDrawPosText(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
+                       const SkMatrix& viewMatrix,
+                       const char text[], size_t byteLength,
+                       const SkScalar pos[], int scalarsPerPosition,
+                       const SkPoint& offset, const SkIRect& regionClipBounds) SK_OVERRIDE;
 
     void init(GrRenderTarget*, const GrClip&, const GrPaint&, const SkPaint&,
               const SkIRect& regionClipBounds);
     bool appendGlyph(GrGlyph::PackedID, SkScalar left, SkScalar top, GrFontScaler*);
     bool uploadGlyph(GrGlyph*, GrFontScaler*);
     void setupCoverageEffect(const SkColor& filteredColor);
     void flush();                 // automatically called by destructor
     void finish();
 };
 
 #endif