Run the File API tests.
auto merge of #4370 : Ms2ger/servo/test-fileapi, r=jdm
layout: Make line breaking able to restart from any position.

This commit removes the "merge-fragments" pass from inline reflow,
instead merging "on the fly". This ended up being simpler, as well as
more fine grained. Additionally, this patch makes the line breaker no
longer clone every fragment (!)

This functionality will be used in the implementation of
`text-overflow`.
Make ErrorEvent::new take cancelable and bubbling enums
auto merge of #4372 : thiagopnts/servo/errorevent, r=Ms2ger

Fixes #4174.
Correctly set the BlobType for File objects.
Add handle_key stub to gonk port
Update azure to fix gonk build
auto merge of #4373 : Ms2ger/servo/blob-type, r=Manishearth
gfx: Implement `box-shadow` per CSS-BACKGROUNDS.
auto merge of #4375 : michaelwu/servo/fix-gonk-20141215, r=glennw

This updates azure to pick up a gonk fix - https://github.com/servo/rust-azure/pull/120 and adds a stub function to the window.
script: Improve dirty propagation and fix script-layout synchronization.

This fixes race conditions whereby layout and script could be running
simultaneously.
script: Add some workarounds for image cache task races
auto merge of #3844 : pcwalton/servo/script-layout-synchronization, r=jdm

This fixes race conditions whereby layout and script could be running
simultaneously.

r? @jdm 
cc @cgaebel
auto merge of #4318 : pcwalton/servo/box-shadow-redux, r=SimonSapin

r? @SimonSapin
layout: Implement basic lists and the CSS1 list properties.

The exact rendering is ill-spec'd. Some things are ugly (especially the
width and height of list style images) but they are infrequently used
and I believe this implementation matches the spec. Numeric lists are
not supported yet, since they will require a separate layout pass.

The implementation is a subclass of `BlockFlow`, on advice from Robert
O'Callahan.
auto merge of #4310 : pcwalton/servo/lists, r=SimonSapin

The exact rendering is ill-spec'd. Some things are ugly (especially the
width and height of list style images) but they are infrequently used
and I believe this implementation matches the spec. Numeric lists are
not supported yet, since they will require a separate layout pass.

The implementation is a subclass of `BlockFlow`, on advice from Robert
O'Callahan.

r? @SimonSapin
style: Move presentational hint synthesis into `legacy.rs`.
style: Parse the legacy `border` attribute per the legacy HTML specification.

Additionally, this patch cleans up some miscellaneous formatting issues
and refactors files in `layout/css/` somewhat to eliminate needless
levels of indirection. It also fixes our handling of presentational
hints that only apply if border is nonzero.
style: Parse the legacy `bgcolor` attribute per the HTML5 specification.

Additionally, this patch cleans up some miscellaneous formatting issues.