roll clang 132784:132902
roll clang 132784:132902

Notable changes: Support for http://clang.llvm.org/docs/LanguageExtensions.html#objc_instancetype
This triggered:
http://codereview.chromium.org/7003152
http://codereview.chromium.org/7104133
http://codereview.chromium.org/7129072

BUG=none
TEST=none
TBR=evan

Review URL: http://codereview.chromium.org/7134089

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@88918 0039d316-1c4b-4281-b951-d872f2087c98

ropik/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,yitian134/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,ropik/chromium,adobe/chromium