Draw a single underline for text-decoration-style: [dashed, dotted].

There is a bug in the new text-decoration styles where the dashed and dotted
underlines would be drawn twice. This appears to be because we are stroking
a SkRect of height zero.

Fixed by drawing a line rather than stroking a rect.

BUG=348518
TEST=Covered by existing tests

Review URL: https://codereview.chromium.org/185683003

git-svn-id: svn://svn.chromium.org/blink/trunk@168743 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Pass the correct GlyphPage to glyphDataAndPageForNonCJKCharacterWithGlyphOrientation

|fallbackPage| may be null, and |page| is what is manipulated.

BUG=349840

Review URL: https://codereview.chromium.org/184963008

git-svn-id: svn://svn.chromium.org/blink/trunk@168744 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Throw DataCloneError on cloning closed Blobs/Files.

Follow the structured cloning spec and disallow cloning of closed Blobs,

 http://www.whatwg.org/specs/web-apps/current-work/#structured-clone

R=mkwst@chromium.org
BUG=344820

Review URL: https://codereview.chromium.org/189623014

git-svn-id: svn://svn.chromium.org/blink/trunk@168746 bbb929c8-8fbe-4397-9dbb-9b2b20218538