Add goog.dom.classlist.addAll() convenience method.  Also restore the way native DOMTokenList is determined now that javascript/externs.js has added DOMTokenList.

R=arv,nicksantos
DELTA=60 (58 added, 0 deleted, 2 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6263


git-svn-id: http://closure-library.googlecode.com/svn/trunk@2510 0b95b8e8-c90f-11de-9d4f-f947ee5921c8
Fix positioning test for chrome-linux.  Browser size change
is causing bad values on positioning.

R=chrishenry
DELTA=5 (4 added, 0 deleted, 1 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6264


git-svn-id: http://closure-library.googlecode.com/svn/trunk@2511 0b95b8e8-c90f-11de-9d4f-f947ee5921c8
Adds a getKthValue method to goog.structs.AvlTree that runs in O(log n) time.

R=chrishenry
DELTA=163 (133 added, 21 deleted, 9 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6265


git-svn-id: http://closure-library.googlecode.com/svn/trunk@2512 0b95b8e8-c90f-11de-9d4f-f947ee5921c8
Fix bug , "Able to select both the radio buttons in the "Insert link" popup window using keyboard tab."

R=nicksantos
DELTA=125 (90 added, 9 deleted, 26 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6266


git-svn-id: http://closure-library.googlecode.com/svn/trunk@2513 0b95b8e8-c90f-11de-9d4f-f947ee5921c8