Bug 866232 - Add support for delaying APZC creation until the layer update. r=BenWa
Bug 866232 - Add an APZCTreeManager to encapsulate the multiple APZCs corresponding to a given layer tree. r=BenWa, mattwoodrow
Bug 866232 - Add code to build the APZC tree on layer updates. r=BenWa, mattwoodrow
Bug 866232 - Some documentation/variable renaming cleanup. r=BenWa
Bug 866232 - Extract a GetCurrentAsyncTransform method in APZC. r=BenWa
Bug 866232 - Add visible region tracking and hit-testing code for APZCTreeManager. r=BenWa, mattwoodrow
Bug 866232 - Update and re-enable the test for hit detection in the APZC tree. r=BenWa
Bug 866232 - Update TabChild to better handle scrolling subframes. r=BenWa, mattwoodrow
Bug 866232 - Disable BrowserElementPanning.js from panning subframes and interfering with multi-apzc. r=BenWa, vingtetun
Bug 866232 - Only fire mozbrowserasyncscroll events on the top-level scrollable for backwards compatibility. r=BenWa
Bug 866232 - Break assumption of a single global root layer tree. r=BenWa, mattwoodrow
Bug 866232 - Update the Windows Metro code to handle APZCTreeManager. r=BenWa, bbondy
Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/775b20c42b52
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 890443 - [SMS] the "fixed header" style and transitions should be adjusted so that it's not jumping when changing header r=schung

Important changes
* changes how the fixed header is found. Now we're iterating starting with the
  top instead of the bottom. In the SMS app, the most common cases is when the
  list is not scrolled so much, and therefore starting at the top will likely be
  way faster once the list is long.
* we don't position the header in the same loop, now we position the header
  depending on the next header, if it exists.
* we use a specific hiding class instead of specifying the 100% transform
  translation in the js code. Also, using a 100% transform translation is used
  instead of display none, so that we can get some necessary measurements in the
  init method. Most notably, we need to take into account the view's padding
  top.

Less important changes:
* changed the desktop mock so that we have more headers when loading in Firefox
* check that we have mozSetMessageHandler before using it so that we can launch
  the app in main Firefox
* moved the first header's margin top to the view's padding top. This makes it
  easier to calculate the exact location to trigger the fixed header switch
  effect.
Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/d2343a615807
Author: William Chen <wchen@mozilla.com>
Desc: Bug 782211 - Update Gaia with additional functionality to support Notification API.
Bug 866232 - Fix build breakage introduced in f69d34718660. r=me
Merge m-c to birch.
Bumping gaia.json for 1 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/7e8284bea36c
Author: Rick Waldron <waldron.rick@gmail.com>
Desc: Bug 899003 - [Buri][Buri][SMS] Long press on number in message: menu includes "Call" option r=gnarf

https://bugzilla.mozilla.org/show_bug.cgi?id=899003
Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
Bug 899745. Remove top most z-index tracking from views because it is unused. r=mats
Bug 899730. Part 1. Add nsIntRegion::Area (it just uses nsRegion::Area). r=mats
Bug 899730. Part 2. Use nsIntRegion::Area in layers and get rid of the unneeded GetRegionArea function that does the same. r=nrc