Canvas fillText and measureText handle ideographic spaces differently.

LayoutTests/canvas/philip/tests/2d.text.measure.width.space.html

Index: LayoutTests/canvas/philip/tests/2d.text.measure.width.space.html
diff --git a/LayoutTests/canvas/philip/tests/2d.text.measure.width.space.html b/LayoutTests/canvas/philip/tests/2d.text.measure.width.space.html
index 1c1ec787aca437611fa125075f266983383818ce..59a17154a414d772f1e1bfec3f2d802637096ed2 100644
--- a/LayoutTests/canvas/philip/tests/2d.text.measure.width.space.html
+++ b/LayoutTests/canvas/philip/tests/2d.text.measure.width.space.html
@@ -23,12 +23,12 @@ deferTest();
 setTimeout(wrapFunction(function () {
     ctx.font = '50px CanvasTest';
     _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
-    _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
-    _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
+    _assertSame(ctx.measureText('A  B').width, 200, "ctx.measureText('A  B').width", "200");
+    _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 650, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "650");
     _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
 
-    _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
-    _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
+    _assertSame(ctx.measureText(' AB').width, 150, "ctx.measureText(' AB').width", "150");
+    _assertSame(ctx.measureText('AB ').width, 150, "ctx.measureText('AB ').width", "150");
 }), 500);