Update brightray to get basic Linux support

* vendor/brightray b542fb3...ba859f7 (11):
  > Mention that Clang 3.0 is needed on Linux
  > Merge pull request #26 from brightray/linux
  > Merge pull request #25 from brightray/getusermedia
  > Put ICU headers on the include path for embedders
  > Update libchromiumcontent to get ICU headers
  > Avoid a crash when starting a download by disallowing downloads
  > Rename the Helper process to Renderer/Plug-In Host/Utility as appropriate
  > Allow clients to supply their own NetworkDelegate implementation
  > Update to latest libchromiumcontent
  > Always build 32-bit in Xcode
  > Merge pull request #24 from brightray/skmatrix
Spew less when scripts fail
Teach script/build about Linux
remove unneeded, clang-breaking lambda
WIP: make it build on Linux
fill in all the stubs
Merge branch 'master' into linux

Conflicts:
	renderer/render_view_observer.cc
	script/build
	vendor/brightray
set default window size, not minimum size
updated vendored brightray
fix up merge from master
use vendored gyp
don't use library_main on linux
move -fno-rtti into brightray.gypi target_defaults
bump to current version of brightray
pick up chrome_sandbox changes
copy the chrome sandbox to out/Debug
don't sudo in the build process
clarify
whitespace
move gtk dependency to brightray