Revert 166365 - roll clang 165787:167488

Reverted because it is assumed to be the cause for multiple compile failures on  mac and linux.

Fixes crash in arm codegen.
Doesn't warn on -Wno-arc-abi.
Nicer diagnostics for nested macro instantiations.
Includes asan support for android on linux (shout if you need that on mac).
Fixes issue with debug information in .S files.
Renames -faddress-sanitizer to -fsanitize=address (continue to use -faddress-sanitizer in chromium for now, until we've updated all third-party gyp files)

BUG=159712,159452,159475,159502,159598,59580
TBR=hans

Review URL: https://codereview.chromium.org/11361133

TBR=thakis@chromium.org
Review URL: https://codereview.chromium.org/11377020

git-svn-id: http://src.chromium.org/svn/trunk/src/build@166369 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -2592,8 +2592,6 @@
                 'cflags': [
                   '-faddress-sanitizer',
                   '-fno-omit-frame-pointer',
-                  # See http://crbug.com/159580
-                  '-w',
                 ],
                 'ldflags': [
                   '-faddress-sanitizer',
@@ -2612,8 +2610,6 @@
                   '-fno-omit-frame-pointer',
                   '-fPIE',
                   '-mllvm', '-tsan-blacklist=<(tsan_blacklist)'
-                  # See http://crbug.com/159580
-                  '-w',
                 ],
                 'ldflags': [
                   '-fthread-sanitizer',
@@ -3014,8 +3010,6 @@
               # binaries on x86_64 host is problematic.
               # TODO(eugenis): re-enable.
               '-faddress-sanitizer',
-              # See http://crbug.com/159580
-              '-w',
             ],
             'ldflags!': [
               '-faddress-sanitizer',
@@ -3135,8 +3129,6 @@
             'xcode_settings': {
               'OTHER_CFLAGS': [
                 '-faddress-sanitizer',
-                # See http://crbug.com/159580
-                '-w',
               ],
             },
             'defines': [