roll clang 153589:154450

Interesting changes in this range:
* The tooling infrastructure landed. Not observable, but it makes it easier
to write clang tools.
* Honor -fno-pic, pie support
* Better diagnostics for several c++11 features
* Cross-compiler changes that hopefully make CrOs clang builds simpler
* Many LTO fixes

Also pick up a minor change to the style plugin: Instead of ignoring
problems below out/, it now ignores them below gen/ and geni/. This
should make it work better with custom build directories.

BUG=none
TEST=none
TBR=mark

Review URL: http://codereview.chromium.org/10081013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@132350 0039d316-1c4b-4281-b951-d872f2087c98

build/common.gypi

@@ -2113,6 +2113,9 @@
               # Warns on switches on enums that cover all enum values but
               # also contain a default: branch. Chrome is full of that.
               '-Wno-covered-switch-default',
+
+              # TODO(thakis): Reenable once http://webk.it/83920 is fixed.
+              '-Wno-literal-conversion',
             ],
             'cflags!': [
               # Clang doesn't seem to know know this flag.
@@ -2527,6 +2530,9 @@
                 # Warns on switches on enums that cover all enum values but
                 # also contain a default: branch. Chrome is full of that.
                 '-Wno-covered-switch-default',
+
+                # TODO(thakis): Reenable once http://webk.it/83920 is fixed.
+                '-Wno-literal-conversion',
               ],
             }],
             ['clang==1 and clang_use_chrome_plugins==1', {

tools/clang/scripts/update.sh

@@ -8,7 +8,7 @@
 # Do NOT CHANGE this if you don't know what you're doing -- see
 # https://code.google.com/p/chromium/wiki/UpdatingClang
 # Reverting problematic clang rolls is safe, though.
-CLANG_REVISION=153589
+CLANG_REVISION=154450
 
 THIS_DIR="$(dirname "${0}")"
 LLVM_DIR="${THIS_DIR}/../../../third_party/llvm"