Plumb drawArc to SkDevice

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index 74e86dc9f07057222ca5432918998f9a6f7f5d80..f44066bf0aa5f48860c07233f9df54f94cb7a576 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -73,6 +73,20 @@ SkPixelGeometry SkBaseDevice::CreateInfo::AdjustGeometry(const SkImageInfo& info
     return geo;
 }
 
+void SkBaseDevice::drawArc(const SkDraw& draw, const SkRect& oval, SkScalar startAngle,
+                           SkScalar sweepAngle, bool useCenter, const SkPaint& paint) {
+    SkPath  path;

[reed1, 2016/08/19 15:55:30]

can/should we assert that at this level, sweepAngle is strictly < 360? (so that
path.arcTo will behave the same)

[bsalomon, 2016/08/19 16:14:34]

Will add docs to SkDevice.h and asserts here. Full circle and 0 sweep should
already be handled by here.

+    if (useCenter) {
+        path.moveTo(oval.centerX(), oval.centerY());
+    }
+    path.arcTo(oval, startAngle, sweepAngle, !useCenter);
+    if (useCenter) {
+        path.close();
+    }
+    this->drawPath(draw, path, paint);
+}
+
+
 void SkBaseDevice::drawDRRect(const SkDraw& draw, const SkRRect& outer,
                               const SkRRect& inner, const SkPaint& paint) {
     SkPath path;