Add support for new canvas ellipse method.

LayoutTests/fast/canvas/canvas-ellipse-zero-lineto-expected.txt

Index: LayoutTests/fast/canvas/canvas-ellipse-zero-lineto-expected.txt
diff --git a/LayoutTests/fast/canvas/canvas-arc-circumference-expected.txt b/LayoutTests/fast/canvas/canvas-ellipse-zero-lineto-expected.txt
similarity index 61%
copy from LayoutTests/fast/canvas/canvas-arc-circumference-expected.txt
copy to LayoutTests/fast/canvas/canvas-ellipse-zero-lineto-expected.txt
index 81943ab365954e79de9e38250502b67f0f3a1144..8680762e3cc2de668fc39956512066a49b3954a0 100644
--- a/LayoutTests/fast/canvas/canvas-arc-circumference-expected.txt
+++ b/LayoutTests/fast/canvas/canvas-ellipse-zero-lineto-expected.txt
@@ -1,67 +1,81 @@
-This tests checks that arc can draw correct circumferences with lineTo.
+This tests checks that ellipse can draw lines correctly in edge cases.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
 PASS imageData.data[1] is 255
-Check clockwise circumference.
- 1. sweepAngle == 2PI
+moveTo + empty ellipse (swing == 0)
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+moveTo + empty ellipse (radiusX == 0)
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+moveTo + empty ellipse (radiusY == 0)
 PASS imageData.data[1] is 0
- 2. sweepAngle == PI
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+empty ellipse (swing == 0) + lineTo
+PASS imageData.data[1] is 255
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
-PASS imageData.data[1] is 255
-PASS imageData.data[1] is 255
- 3. sweepAngle > 2PI
+empty ellipse (radiusX == 0) + lineTo
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+empty ellipse (radiusY == 0) + lineTo
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
- 4. sweepAngle < 0
+lineTo + empty ellipse (radiusX == 0) + lineTo
+ 1. sweepAngle < PI / 2
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
-PASS imageData.data[1] is 255
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+ 2. sweepAngle < PI
 PASS imageData.data[1] is 0
-Check anticlockwise circumference.
- 1. sweepAngle == 2PI
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+ 3. sweepAngle < 2PI
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+ 4. sweepAngle < 4PI
 PASS imageData.data[1] is 0
- 2. sweepAngle == PI
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
-PASS imageData.data[1] is 255
+PASS imageData.data[1] is 0
+ 5. sweepAngle > 4PI
+PASS imageData.data[1] is 0
+PASS imageData.data[1] is 0
+PASS imageData.data[1] is 0
+PASS imageData.data[1] is 0
+lineTo + empty ellipse (radiusY == 0) + lineTo
+ 1. sweepAngle < PI / 2
+PASS imageData.data[1] is 0
+PASS imageData.data[1] is 0
+PASS imageData.data[1] is 0
+ 2. sweepAngle < PI
+PASS imageData.data[1] is 0
 PASS imageData.data[1] is 255
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
- 3. sweepAngle > 2PI
+ 3. sweepAngle < 2PI
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+ 4. sweepAngle < 4PI
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
- 4. sweepAngle < 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
+ 5. sweepAngle > 4PI
+PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
 PASS imageData.data[1] is 0
-PASS imageData.data[1] is 255
 PASS successfullyParsed is true
 
 TEST COMPLETE