Make GrGpuResource::gpuMemorySize non-virtual w/ onGpuMemorySize virtual impl

src/gpu/gl/GrGLPathRange.h

Index: src/gpu/gl/GrGLPathRange.h
diff --git a/src/gpu/gl/GrGLPathRange.h b/src/gpu/gl/GrGLPathRange.h
index f21ce3a7c97cf7cc8115fd9a5d616e766df2286f..440ffbc0c919cff5f70aa9e43d905497b73146f9 100644
--- a/src/gpu/gl/GrGLPathRange.h
+++ b/src/gpu/gl/GrGLPathRange.h
@@ -43,8 +43,6 @@ public:
 
     GrGLuint basePathID() const { return fBasePathID; }
 
-    virtual size_t gpuMemorySize() const SK_OVERRIDE { return fGpuMemorySize; }
-
 protected:
     virtual void onInitPath(int index, const SkPath&) const;
 
@@ -52,6 +50,8 @@ protected:
     virtual void onAbandon() SK_OVERRIDE;
 
 private:
+    virtual size_t onGpuMemorySize() const SK_OVERRIDE { return fGpuMemorySize; }
+
     GrGLuint fBasePathID;
     mutable size_t fGpuMemorySize;