move SkPath direction-as-computed into SkPathPriv

gm/strokefill.cpp

Index: gm/strokefill.cpp
diff --git a/gm/strokefill.cpp b/gm/strokefill.cpp
index b6e888b047bc48333b185cb2564e5d44cd38486a..04985485d975aa45cfeefb9c7a5d2f70ab5bb999 100644
--- a/gm/strokefill.cpp
+++ b/gm/strokefill.cpp
@@ -7,7 +7,7 @@
 
 #include "gm.h"
 #include "SkCanvas.h"
-#include "SkPath.h"
+#include "SkPathPriv.h"
 #include "SkTypeface.h"
 
 namespace skiagm {
@@ -69,12 +69,12 @@ protected:
         path2.reset();
         path2.addCircle(x + SkIntToScalar(240), y + SkIntToScalar(200), SkIntToScalar(50), SkPath::kCCW_Direction);
         canvas->drawPath(path2, paint);
-        SkASSERT(path2.cheapIsDirection(SkPath::kCCW_Direction));
+        SkASSERT(SkPathPriv::CheapIsFirstDirection(path2, SkPathPriv::kCCW_FirstDirection));
 
         path2.reset();
-        SkASSERT(!path2.cheapComputeDirection(NULL));
+        SkASSERT(!SkPathPriv::CheapComputeFirstDirection(path2, NULL));
         path2.addCircle(x + SkIntToScalar(360), y + SkIntToScalar(200), SkIntToScalar(50), SkPath::kCW_Direction);
-        SkASSERT(path2.cheapIsDirection(SkPath::kCW_Direction));
+        SkASSERT(SkPathPriv::CheapIsFirstDirection(path2, SkPathPriv::kCW_FirstDirection));
         canvas->drawPath(path2, paint);
 
         SkRect r = SkRect::MakeXYWH(x - SkIntToScalar(50), y + SkIntToScalar(280),
@@ -98,18 +98,18 @@ protected:
         r = SkRect::MakeXYWH(x + SkIntToScalar(190), y + SkIntToScalar(280), 
                              SkIntToScalar(100), SkIntToScalar(100));
         path4.reset();
-        SkASSERT(!path4.cheapComputeDirection(NULL));
+        SkASSERT(!SkPathPriv::CheapComputeFirstDirection(path4, NULL));
         path4.addRect(r, SkPath::kCCW_Direction);
-        SkASSERT(path4.cheapIsDirection(SkPath::kCCW_Direction));
+        SkASSERT(SkPathPriv::CheapIsFirstDirection(path4, SkPathPriv::kCCW_FirstDirection));
         path4.moveTo(0, 0); // test for crbug.com/247770
         canvas->drawPath(path4, paint);
 
         r = SkRect::MakeXYWH(x + SkIntToScalar(310), y + SkIntToScalar(280), 
                              SkIntToScalar(100), SkIntToScalar(100));
         path4.reset();
-        SkASSERT(!path4.cheapComputeDirection(NULL));
+        SkASSERT(!SkPathPriv::CheapComputeFirstDirection(path4, NULL));
         path4.addRect(r, SkPath::kCW_Direction);
-        SkASSERT(path4.cheapIsDirection(SkPath::kCW_Direction));
+        SkASSERT(SkPathPriv::CheapIsFirstDirection(path4, SkPathPriv::kCW_FirstDirection));
         path4.moveTo(0, 0); // test for crbug.com/247770
         canvas->drawPath(path4, paint);
     }