add Method param to drawTextOnPath, supporting SVG spec

src/core/SkDraw.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDraw.h"
 #include "SkBlitter.h"
 #include "SkCanvas.h"
@@ skipping 1925 matching lines @@
             case SkPath::kClose_Verb:
                 dst->close();
                 break;
             default:
                 SkDEBUGFAIL("unknown verb");
                 break;
         }
     }
 }
 
-void SkDraw::drawTextOnPath(const char text[], size_t byteLength,
-                            const SkPath& follow, const SkMatrix* matrix,
+void SkDraw::drawTextOnPath(const char text[], size_t byteLength, const SkPath& follow,
+                            const SkMatrix* matrix, SkCanvas::TextOnPathMethod method,
                             const SkPaint& paint) const {
     SkASSERT(byteLength == 0 || text != NULL);
 
     // nothing to draw
     if (text == NULL || byteLength == 0 || fRC->isEmpty()) {
         return;
     }
 
     SkTextToPathIter    iter(text, byteLength, paint, true);
     SkPathMeasure       meas(follow, false);
@@ skipping 436 matching lines @@
         mask->fImage = SkMask::AllocImage(size);
         memset(mask->fImage, 0, mask->computeImageSize());
     }
 
     if (SkMask::kJustComputeBounds_CreateMode != mode) {
         draw_into_mask(*mask, devPath, style);
     }
 
     return true;
 }