Add some flaky layout tests and remove some consistently passing ones....

webkit/tools/layout_tests/test_expectations.txt

Index: webkit/tools/layout_tests/test_expectations.txt
===================================================================
--- webkit/tools/layout_tests/test_expectations.txt	(revision 30527)
+++ webkit/tools/layout_tests/test_expectations.txt	(working copy)
@@ -1382,7 +1382,7 @@
 
 // We print to stderr when a failure happens while importing XSL;
 // should disable this in libxml.
-BUG10347 MAC LINUX : LayoutTests/fast/xsl/transform-xhr-doc.xhtml = FAIL
+BUG10347 MAC : LayoutTests/fast/xsl/transform-xhr-doc.xhtml = FAIL
 
 // Linux pixeltest failure: Failing to apply style
 BUG10349 LINUX : LayoutTests/fast/forms/select-style.html = FAIL
@@ -1409,6 +1409,7 @@
 BUG10351 MAC : LayoutTests/plugins/inner-html-display-none.html = FAIL
 BUG10351 MAC : LayoutTests/plugins/invoke.html = PASS FAIL
 BUG10351 MAC : LayoutTests/plugins/mouse-events.html = FAIL
+BUG10351 MAC DEBUG : LayoutTests/http/tests/plugins/npapi-response-headers.html = PASS FAIL
 // Skip because we throw an exception before we get to dumpAsText.
 BUG10667 SKIP MAC : chrome/plugins/get-url-with-blank-target.html = FAIL
 BUG10667 MAC SLOW : chrome/plugins/multiple-plugins.html = FAIL
@@ -1502,9 +1503,6 @@
 // incorrect layout
 BUG10370 MAC : LayoutTests/fast/css/font-weight-1.html = FAIL
 
-// Error from CGImageSourceUpdateData but everything else is correct.
-BUG10373 MAC : LayoutTests/http/tests/multipart/invalid-image-data.html = FAIL
-
 // Not really sure why these are failing at the moment
 BUG10376 MAC : LayoutTests/fast/dom/isindex-002.html = FAIL
 
@@ -2293,7 +2291,7 @@
 BUG10405 WIN : LayoutTests/svg/custom/struct-use-09-b.svg = FAIL
 
 // Pass locally but fail on the bots.
-BUG10409 MAC LINUX : LayoutTests/svg/custom/clip-path-units-changes.svg = FAIL
+BUG10409 LINUX : LayoutTests/svg/custom/clip-path-units-changes.svg = FAIL
 
 // intermittent failures on the buildbot
 BUG10411 : LayoutTests/svg/custom/gradient-stop-style-change.svg = FAIL PASS
@@ -2652,10 +2650,6 @@
 // so the test timeouts.
 BUG11001 LINUX MAC WIN : LayoutTests/http/tests/history/back-to-post.php = TIMEOUT
 
-// New failures from WebKit merge 42725:42805
-// Reasons unknown..
-BUG11012 LINUX MAC : LayoutTests/http/tests/security/xss-DENIED-xml-external-entity.xhtml = FAIL
-
 // Need Linux rebaselines from WebKit Merge 42805:42932
 BUG11123 LINUX : LayoutTests/editing/inserting/4960120-1.html = FAIL
 BUG11123 LINUX : LayoutTests/fast/forms/textarea-scrollbar.html = FAIL
@@ -2783,8 +2777,8 @@
 // WebKit 45270:45287
 BUG15490 LINUX : LayoutTests/editing/deleting/25322-1.html = PASS FAIL CRASH
 
-// Flaky for a while on DEBUG; also related to BUG17974
-BUG15267 WIN LINUX DEBUG : LayoutTests/transitions/cancel-transition.html = PASS FAIL
+// Flaky for a while; also related to BUG17974
+BUG15267 WIN LINUX : LayoutTests/transitions/cancel-transition.html = PASS FAIL
 
 // WebKit 45431:45444
 BUG10384 MAC : LayoutTests/fast/events/frame-tab-focus.html = CRASH FAIL
@@ -2794,7 +2788,6 @@
 
 // WebKit tests regressions 20529:20532
 BUG16675 MAC : LayoutTests/fast/dynamic/flash-replacement-test.html = FAIL
-BUG16675 MAC : LayoutTests/fast/loader/loadInProgress.html = FAIL
 // This started crashing regularly as a result of r28798 (see bug 24720).
 BUG16675 MAC DEBUG : LayoutTests/plugins/return-error-from-new-stream-callback-in-full-frame-plugin.html = PASS FAIL
 
@@ -2991,7 +2984,6 @@
 BUG21764 : LayoutTests/fast/forms/ValidityState-typeMismatch-url.html = FAIL
 
 // WK roll to 48371
-BUG21841 MAC RELEASE : LayoutTests/plugins/destroy-during-npp-new.html = FAIL
 BUG21841 MAC DEBUG SLOW : LayoutTests/plugins/destroy-during-npp-new.html = FAIL CRASH
 BUG21841 WIN DEBUG : LayoutTests/plugins/destroy-during-npp-new.html = CRASH PASS
 
@@ -3155,7 +3147,7 @@
 
 // WebKit roll 50073:50101
 // Test added by Ryosuke: http://trac.webkit.org/changeset/50090
-BUG25889 MAC DEBUG : LayoutTests/fast/forms/select-empty-option-height.html = TIMEOUT
+BUG25889 MAC DEBUG : LayoutTests/fast/forms/select-empty-option-height.html = PASS TIMEOUT
 
 // WebKit roll 50101:50158
 BUG_JORLOW : LayoutTests/fast/css/getComputedStyle/computed-style-without-renderer.html = FAIL CRASH