Fix TestingServer handling of missing buildnumber parameter.

Surprisingly (undocumented-ly), webapp2.Request.get(param) returns
empty string (rather than None) when a parameter is missing.

R=ojan@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/414123002

git-svn-id: svn://svn.chromium.org/blink/trunk@178878 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Change BidiResolver::createBidiRunsForLine to take run list as argument

Change BidiResolver, InlineBidiResolver, BidiRunForLine, InlineIterator,
and RenderBlockLineLayout to pass bidi run list as argument to
createBidiRunsForLine and remove the m_runs class field and runs method.

This is the third, and final, step towards reversing the ownership of
the run list.

BUG=396963
R=dglazkov@chromium.org

Review URL: https://codereview.chromium.org/418143003

git-svn-id: svn://svn.chromium.org/blink/trunk@178879 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Manual rebaselines for windows form controls

BUG=395043
TBR=bungeman@chromium.org

Review URL: https://codereview.chromium.org/420613003

git-svn-id: svn://svn.chromium.org/blink/trunk@178880 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Use tighter typing in editing/

Use tighter typing in editing/ to improve code readability. This CL focuses
mainly on htmlediting.cpp / htmlediting.h.

R=adamk@chromium.org, leviw@chromium.org

Review URL: https://codereview.chromium.org/420603002

git-svn-id: svn://svn.chromium.org/blink/trunk@178881 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Mark various flaky tests.

BUG=353751,353763,357462,397321,397324
TEST=none
TBR=haraken

Review URL: https://codereview.chromium.org/418183003

git-svn-id: svn://svn.chromium.org/blink/trunk@178882 bbb929c8-8fbe-4397-9dbb-9b2b20218538