Fragmentation in RenderLayer is intermingled with the generic layers code. Investigate a way to move the fragmentation logic in a different class / file.
Created attachment 223866 [details] WIP Patch
Created attachment 223869 [details] WIP Patch
Comment on attachment 223869 [details] WIP Patch Attachment 223869 [details] did not pass mac-ews (mac): Output: http://webkit-queues.appspot.com/results/6482338103951360 New failing tests: fast/multicol/newmulticol/layers-split-across-columns.html fast/regions/region-padding-overflow-hidden.html fast/multicol/transform-inside-opacity.html
Created attachment 223873 [details] Archive of layout-test-results from webkit-ews-06 for mac-mountainlion The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: webkit-ews-06 Port: mac-mountainlion Platform: Mac OS X 10.8.5
Comment on attachment 223869 [details] WIP Patch Attachment 223869 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/6117043216580608 New failing tests: fast/multicol/newmulticol/layers-split-across-columns.html fast/regions/region-padding-overflow-hidden.html fast/multicol/transform-inside-opacity.html
Created attachment 223875 [details] Archive of layout-test-results from webkit-ews-16 for mac-mountainlion-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: webkit-ews-16 Port: mac-mountainlion-wk2 Platform: Mac OS X 10.8.5
Comment on attachment 223869 [details] WIP Patch Attachment 223869 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/5042014378786816 New failing tests: fast/regions/clip-to-padding-box-vertical-lr.html fast/regions/clip-to-padding-box.html fast/regions/region-padding-overflow-hidden.html fast/multicol/newmulticol/layers-split-across-columns.html fast/multicol/transform-inside-opacity.html
Created attachment 223886 [details] Archive of layout-test-results from webkit-ews-15 for mac-mountainlion-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: webkit-ews-15 Port: mac-mountainlion-wk2 Platform: Mac OS X 10.8.5