Devirtualize read/write pixels on surface.

include/gpu/GrSurface.h

Index: include/gpu/GrSurface.h
diff --git a/include/gpu/GrSurface.h b/include/gpu/GrSurface.h
index 0bbf8d9c12a0ee4eac5fcc7de6c57b2057a02e7d..ba51f3b3c87940cdc370e1e307e89d21884360cd 100644
--- a/include/gpu/GrSurface.h
+++ b/include/gpu/GrSurface.h
@@ -87,11 +87,11 @@ public:
      * @return true if the read succeeded, false if not. The read can fail because of an unsupported
      *              pixel config.
      */
-    virtual bool readPixels(int left, int top, int width, int height,
-                            GrPixelConfig config,
-                            void* buffer,
-                            size_t rowBytes = 0,
-                            uint32_t pixelOpsFlags = 0) = 0;
+    bool readPixels(int left, int top, int width, int height,
+                    GrPixelConfig config,
+                    void* buffer,
+                    size_t rowBytes = 0,
+                    uint32_t pixelOpsFlags = 0);
 
     /**
      * Copy the src pixels [buffer, rowbytes, pixelconfig] into the surface at the specified
@@ -106,11 +106,11 @@ public:
      *                      packed.
      * @param pixelOpsFlags See the GrContext::PixelOpsFlags enum.
      */
-    virtual void writePixels(int left, int top, int width, int height,
-                             GrPixelConfig config,
-                             const void* buffer,
-                             size_t rowBytes = 0,
-                             uint32_t pixelOpsFlags = 0) = 0;
+    bool writePixels(int left, int top, int width, int height,
+                     GrPixelConfig config,
+                     const void* buffer,
+                     size_t rowBytes = 0,
+                     uint32_t pixelOpsFlags = 0);
 
     /**
      * After this returns any pending writes to the surface will be issued to the backend 3D API.