Remove two text-selection layout tests that pass on Mac now after an upstream...

webkit/tools/layout_tests/test_expectations.txt

 // This file consists of lines with specifications of what
 // to expect from layout test cases. The test cases can be directories
 // in which case the expectations apply to all test cases in that
 // directory and any subdirectory. The format of the file is along the
 // lines of:
 //
 // LayoutTests/fast/js/fixme.js = FAIL
 // LayoutTests/fast/js/flaky.js = FAIL PASS
 // LayoutTests/fast/js/crash.js = CRASH TIMEOUT FAIL PASS
 //
@@ skipping 1845 matching lines @@
 
 // Needs investigation, perhaps just needs to be re-baselined on all
 // platforms.
 BUG10859 LINUX MAC : LayoutTests/fast/dom/HTMLSelectElement/named-options.html = FAIL
 BUG10861 WIN : LayoutTests/fast/dom/HTMLSelectElement/named-options.html = FAIL
 
 // New failures from WebKit Merge 42671:42725
 BUG10861 WIN : LayoutTests/http/tests/plugins/post-url-file.html = PASS
 BUG10861 MAC : LayoutTests/http/tests/plugins/post-url-file.html = TIMEOUT
 
-// WebKit change http://trac.webkit.org/changeset/42732 introduced Mac specific expectations,
-// but Chrome Mac has Windows behaviors.
-BUG20833 MAC : LayoutTests/editing/selection/click-in-margins-inside-editable-div.html = FAIL
-BUG20833 MAC : LayoutTests/editing/selection/click-in-padding-with-multiple-line-boxes.html = FAIL
-
 // New failures from WebKit merge 42725:42805
 // Because of WebKit change http://trac.webkit.org/changeset/42740,
 // DumpRenderTree now dumps additional info on the element that was
 // passed to the policy delegate. So the dump changes.
 // We need to reflect the change in test shell.
 BUG11000 : LayoutTests/fast/encoding/mailto-always-utf-8.html = FAIL CRASH
 BUG11000 : LayoutTests/fast/loader/policy-delegate-action-hit-test-zoomed.html = FAIL
 BUG11000 : LayoutTests/http/tests/misc/policy-delegate-called-twice.html = FAIL
 BUG11000 : LayoutTests/http/tests/misc/redirect-to-external-url.html = FAIL
 
@@ skipping 468 matching lines @@
 BUG21439 : LayoutTests/userscripts/simple-stylesheet.html = FAIL
 // New database test that fails.
 BUG21442 : LayoutTests/storage/test-authorizer.html = TIMEOUT
 
 // Crashing on Linux Debug as of V8 update at r25855
 BUG21501 LINUX DEBUG : LayoutTests/svg/custom/linking-a-03-b-preserveAspectRatio.svg = CRASH
 
 // New test added by https://trac.webkit.org/changeset/48260.
 // Marked as SKIP because it fails to find the test expectations (dies early).
 BUG21522 SKIP : LayoutTests/http/tests/local/send-dragged-file.html = FAIL