roll clang 182481:184830

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 12ada0e96c045aedb78fbb48a13d63e31b7729de..86d133de7b9d495a64a4c5733b895a65b51fd1d3 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -3129,6 +3129,11 @@
               # suffix. However, this is used heavily in NaCl code, so disable
               # the warning for now.
               '-Wno-reserved-user-defined-literal',
+
+              # Clang considers the `register` keyword as deprecated, but e.g.
+              # code generated by flex (used in angle) contains that keyword.
+              # http://crbug.com/255186
+              '-Wno-deprecated-register',
             ],
             'cflags_cc': [
               # See the comment in the Mac section for what it takes to move
@@ -3826,6 +3831,11 @@
 
                 # Warns when a const char[] is converted to bool.
                 '-Wstring-conversion',
+
+                # Clang considers the `register` keyword as deprecated, but e.g.
+                # code generated by flex (used in angle) contains that keyword.
+                # http://crbug.com/255186
+                '-Wno-deprecated-register',
               ],
               'OTHER_CPLUSPLUSFLAGS': [
                 # gnu++11 instead of c++11 is needed because some code uses