Enables Activity Logger to log extension adding the following elements to the DOM:
- script
- link
- anchor
- iframe
- form
- input
- button

BUG=388287

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=177105

Review URL: https://codereview.chromium.org/349263002

git-svn-id: svn://svn.chromium.org/blink/trunk@177245 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix shadow repaint issue in vertical-rl mode

The original code erroneously flipped the shadow edges when the box is
in vertical-rl writing mode, causing incorrect visual overflow and
repaint rects.

Our actual painting code for shadow is correct. The bug is just about
incorrect invalidation rects.

Note because of other bugs about shadow invalidation, the expected
result of the new tests are not correct yet. Will rebaseline them
when the bugs are fixed in later changes.

References:
[1] http://dev.w3.org/csswg/css-writing-modes-3/#physical-only

BUG=388343
TEST=fast/box-shadow/shadow-box-resize-writing-mode.html
TEST=fast/box-shadow/shadow-box-resize.html

Review URL: https://codereview.chromium.org/347393007

git-svn-id: svn://svn.chromium.org/blink/trunk@177246 bbb929c8-8fbe-4397-9dbb-9b2b20218538