Fix for ASSERTION FAILURE contentSize >=0

LayoutTests/css3/flexbox/content-size-crash-expected.txt

Index: LayoutTests/css3/flexbox/content-size-crash-expected.txt
diff --git a/LayoutTests/css3/flexbox/content-size-crash-expected.txt b/LayoutTests/css3/flexbox/content-size-crash-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..acfdfd842cc46e01557eaa052dbe378ec38fe14e
--- /dev/null
+++ b/LayoutTests/css3/flexbox/content-size-crash-expected.txt
@@ -0,0 +1,18 @@
+This test passes if it does not crash.
+
+On success, you will see a series of "
+PASS
+" messages, followed by "
+TEST COMPLETE
+".
+
+
+PASS
+ successfullyParsed is true
+
+
+TEST COMPLETE
+
+* { padding-right:84%; display:flex; }
+.pass {font-weight: bold;color: green;}.fail {font-weight: bold;color: red;}#console {white-space: pre-wrap;font-family: monospace;}
+description('This test passes if it does not crash.');

[Sunil Ratnu, 2015/05/27 16:05:54]

Ideally these lines should not have been here. But whenever we load the test
case html, then the code present between the <style> tags is also rendered on
the screen i.e. the whole code is dumped onto the screen. Should we mark that as
a separate bug? And until the style part is being rendered onto the screen, we
can not keep this testcase free from the above code. Any suggestions?

[cbiesinger, 2015/05/27 16:50:19]

That text is only there because of * { display: flex; }. Maybe you can limit
that more?