add Method param to drawTextOnPath, supporting SVG spec

tests/SurfaceTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkImageEncoder.h"
@@ skipping 370 matching lines @@
     EXPECT_COPY_ON_WRITE(drawRRect(testRRect, testPaint))
     EXPECT_COPY_ON_WRITE(drawPath(testPath, testPaint))
     EXPECT_COPY_ON_WRITE(drawBitmap(testBitmap, 0, 0))
     EXPECT_COPY_ON_WRITE(drawBitmapRect(testBitmap, NULL, testRect))
     EXPECT_COPY_ON_WRITE(drawBitmapNine(testBitmap, testIRect, testRect, NULL))
     EXPECT_COPY_ON_WRITE(drawSprite(testBitmap, 0, 0, NULL))
     EXPECT_COPY_ON_WRITE(drawText(testText.c_str(), testText.size(), 0, 1, testPaint))
     EXPECT_COPY_ON_WRITE(drawPosText(testText.c_str(), testText.size(), testPoints2, \
         testPaint))
     EXPECT_COPY_ON_WRITE(drawTextOnPath(testText.c_str(), testText.size(), testPath, NULL, \
-        testPaint))
+        SkCanvas::kStretch_TextOnPathMethod, testPaint))
 }
 
 static void TestSurfaceWritableAfterSnapshotRelease(skiatest::Reporter* reporter,
                                                     SurfaceType surfaceType,
                                                     GrContext* context) {
     // This test succeeds by not triggering an assertion.
     // The test verifies that the surface remains writable (usable) after
     // acquiring and releasing a snapshot without triggering a copy on write.
     SkAutoTUnref<SkSurface> surface(createSurface(surfaceType, context));
     SkCanvas* canvas = surface->getCanvas();
@@ skipping 168 matching lines @@
                 TestSurfaceNoCanvas(reporter, kGpuScratch_SurfaceType, context, SkSurface::kRetain_ContentChangeMode);
                 TestGetTexture(reporter, kGpu_SurfaceType, context);
                 TestGetTexture(reporter, kGpuScratch_SurfaceType, context);
                 test_empty_surface(reporter, context);
                 test_surface_budget(reporter, context);
             }
         }
     }
 #endif
 }