add Method param to drawTextOnPath, supporting SVG spec

gm/shadertext2.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
 
@@ skipping 23 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 struct LabeledMatrix {
     SkMatrix    fMatrix;
     const char* fLabel;
 };
 
 class ShaderText2GM : public GM {
+    SkCanvas::TextOnPathMethod fMethod;
+
 public:
-    ShaderText2GM() {
+    ShaderText2GM() : fMethod(SkCanvas::kStretch_TextOnPathMethod) {
         this->setBGColor(0xFFDDDDDD);
     }
 
 protected:
 
     SkString onShortName() SK_OVERRIDE {
         return SkString("shadertext2");
     }
 
     SkISize onISize() SK_OVERRIDE { return SkISize::Make(1800, 900); }
@@ skipping 111 matching lines @@
                                                 1.2f * w, 2.f * kPointSize),
                                                 225.f, 359.f,
                                                 false);
                     path.close();
 
                     canvas->translate(0.f, kPointSize + kPadY);
                     columnH += kPointSize + kPadY;
 
                     canvas->save();
                         canvas->concat(matrices[m].fMatrix);
-                        canvas->drawTextOnPath(kText, kTextLen, path, NULL, paint);
-                        canvas->drawTextOnPath(kText, kTextLen, path, NULL, outlinePaint);
+                        canvas->drawTextOnPath(kText, kTextLen, path, NULL, fMethod, paint);
+                        canvas->drawTextOnPath(kText, kTextLen, path, NULL, fMethod, outlinePaint);
                     canvas->restore();
                     SkPaint stroke;
                     stroke.setStyle(SkPaint::kStroke_Style);
                     canvas->translate(0.f, kPointSize + kPadY);
                     columnH += kPointSize + kPadY;
                 }
                 canvas->restore();
                 canvas->translate(w + kPadX, 0.f);
             }
             if (0 == s) {
@@ skipping 12 matching lines @@
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ShaderText2GM; }
 static GMRegistry reg(MyFactory);
 }