New UI for Find command: find-as-you-type.

New UI for Find command: find-as-you-type.
Does not apply to plugin version of editor.
Most of this is from the Xored code. The major change
is collapsing three plugins into one. Since there is
quite a bit of code, I decided not to add it to the
deploy plugin, but to keep it separate.
New icons are not included in the review since they
crash the uploader.

R=danrubel@google.com, pquitslund@google.com

Committed: https://code.google.com/p/dart/source/detail?r=24256

[pquitslund, 2013-06-19 18:27:51]

lgtm.

[danrubel, 2013-06-19 19:41:53]

lgtm

[messick, 2013-06-19 19:55:26]

Thanks for the reviews. I'm going to hold off committing this CL until I add new
highlight color specs to all the dark themes.

[messick, 2013-06-19 22:31:33]

PTAL

I changed a few colors, but otherwise everything is the same.

Dan, is there anything that needs to be done to the build before I commit this?

[messick, 2013-06-20 22:37:14]

PTAL

I removed all color definitions. I'm doing a lot of work on colors for the
client I'm working with currently and this seems the best way to manage it,
since this CL is taking so long to review.

Still not certain it won't break the build if committed...

[danrubel, 2013-06-20 22:45:02]

LGTM.

[messick, 2013-06-20 23:03:23]

Committed patchset #4 manually as r24256 (presubmit successful).