Merge m-c to f-t
Bug 943513 - Update visual style of action modes. r=lucasr
Bug 942680 - Place search pane below actionbar. r=lucasr
Bug 941387 - [Australis] UITour: Implement the new highlight styling and animation. ui-r=mmaslaney r=Unfocused
bug 903284 and bug 895686 - Add updated icons for contextual app bar. Change "unpin" to "hide" for bookmarks and history. r=sfoster
Bug 945191 - Combined buttons show wrong context menu options when they are in the toolbar. r=Gijs
Bug 906226 - Move shared test code to a single file. r=gwagner
b=937057 remove resampler latency from BufferSource playback r=padenot

--HG--
extra : transplant_source : /pU%E1%EC%93%1F%04%29%7D%86%E7%C2%21%F6k%15%C0Bm
test for bug 937475

--HG--
extra : transplant_source : %BC%9F%D3%7FB%A2%93%F45%0E%A7%FD%BCXK%7D%D6I%29%8C
Bug 941844 - Part 3: additional Robocop checks for page titles. r=trivial
merge fx-team to mozilla-central
merge b2g-inbound to mozilla-central
Backed out changeset d5a62078b4f2 (bug 945191) for commit msg without 'Australis'
Bug 945191 - Australis' combined buttons show wrong context menu options when they are in the toolbar. r=Gijs, DONTBUILD
Bug 942940 - Fix a potential memory leak. r=abr
Bug 945023 - Extract CreateTextureXXX and CreateRenderbufferXXX from GLContext. r=bjacob
Bug 945813 - Paper over cycle collection problem in IndexedDB. r=mccr8, r=khuey
Bug 947134 - Enable datastore/tests/test_certifiedApp.html for B2G Emulator, r=ehsan
Bug 918550 - Update libvpx to 1.3.0 r=glandium,cpearce

This updates our in-tree copy of libvpx to the
v1.3.0 git tag (2e88f2f2ec777259bda1714e72f1ecd2519bceb5)
libvpx 1.3.0 adds support for VP9. VP9 support is built
but not yet exposed with this commit.

Our update.sh script is replaced with update.py that can
update the build system to a given git commit.
 - checkout out upstream git
 - create platform dependend config files
 - add/remove changed libvpx files
 - update moz.build
 - warn about new build categories in libvpx
Bug 833023 - Enable VP9 playback in HTML media elements. r=kinetik