Fix vertical text scaling on Mac.

src/core/SkDraw.cpp

Index: src/core/SkDraw.cpp
===================================================================
--- src/core/SkDraw.cpp	(revision 9039)
+++ src/core/SkDraw.cpp	(working copy)
@@ -1427,7 +1427,13 @@
     SkScalar xpos, prevXPos = 0;
 
     while (iter.next(&iterPath, &xpos)) {
-        matrix.postTranslate(xpos - prevXPos, 0);
+        SkScalar delta = xpos - prevXPos;

[bungeman-skia, 2013/05/10 22:30:36]

This is probably a bad solution, it's rather strange that SkTextToPathIter known
about vertical text, but still uses a total scalar advance instead of a total
vector advance. Perhaps SkTextToPathIter should get some attention.

I wanted to make sure that the path stuff was working, and the easiest way to do
that was to hit 'k' in SampleApp. Doing so made all the text lay out
horizontally, but by vertical metrics.

This change need not be part of the final CL, but we should fix this.

+        if (paint.isVerticalText()) {
+            matrix.postTranslate(0, delta);
+        } else {
+            matrix.postTranslate(delta, 0);
+        }
+
         if (iterPath) {
             const SkPaint& pnt = iter.getPaint();
             if (fDevice) {