Update from https://crrev.com/306655

build/secondary/third_party/nss/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/linux/pkg_config.gni")
 
 if (is_linux) {
   # This is a dependency on NSS with no libssl. On Linux we use a built-in SSL
   # library but the system NSS libraries. Non-Linux platforms using NSS use the
   # hermetic one in //third_party/nss.
   #
   # Generally you should depend on //crypto:platform instead of using this
   # config since that will properly pick up NSS or OpenSSL depending on
   # platform and build config.
   pkg_config("system_nss_no_ssl_config") {
     packages = [ "nss" ]
-    extra_args = [ "-v", "-lssl3" ]
+    extra_args = [
+      "-v",
+      "-lssl3",
+    ]
   }
 } else {
   include_nss_root_certs = is_ios
   include_nss_libpkix = is_ios
 
   config("nspr_config") {
     defines = [ "NO_NSPR_10_SUPPORT" ]
     include_dirs = [
       "nspr/pr/include",
       "nspr/lib/ds",
@@ skipping 172 matching lines @@
       "nspr/pr/src/threads/prcthr.c",
       "nspr/pr/src/threads/prdump.c",
       "nspr/pr/src/threads/prmon.c",
       "nspr/pr/src/threads/prrwlock.c",
       "nspr/pr/src/threads/prsem.c",
       "nspr/pr/src/threads/prtpd.c",
     ]
 
     public_configs = [ ":nspr_config" ]
 
-    configs -= [
-      "//build/config/compiler:chromium_code",
-    ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
     if (is_win) {
       configs -= [
         "//build/config/win:unicode",  # Requires 8-bit mode.
         "//build/config/win:lean_and_mean",  # Won"t compile with lean and mean.
       ]
     }
     configs += [ "//build/config/compiler:no_chromium_code" ]
 
     cflags = []
     defines = [
       "_NSPR_BUILD_",
       "FORCE_PR_LOG",
     ]
 
-    include_dirs = [
-      "nspr/pr/include/private",
-    ]
+    include_dirs = [ "nspr/pr/include/private" ]
 
     if (is_win) {
       cflags = [
         "/wd4554",  # Check precidence.
         "/wd4267",  # Conversion from size_t to "type".
       ]
       defines += [
         "XP_PC",
         "WIN32",
         "WIN95",
@@ skipping 67 matching lines @@
         "_PR_PTHREADS",
         "HAVE_BSD_FLOCK",
         "HAVE_DLADDR",
         "HAVE_LCHOWN",
         "HAVE_SOCKLEN_T",
         "HAVE_STRERROR",
       ]
     }
 
     if (is_mac) {
-      defines += [
-        "HAVE_CRT_EXTERNS_H",
-      ]
+      defines += [ "HAVE_CRT_EXTERNS_H" ]
       libs = [
         "CoreFoundation.framework",
         "CoreServices.framework",
       ]
     }
 
     if (is_clang) {
       cflags += [
         # nspr uses a bunch of deprecated functions (NSLinkModule etc) in
         # prlink.c on mac.
         "-Wno-deprecated-declarations",
+
         # nspr passes "const char*" through "void*".
         "-Wno-incompatible-pointer-types",
+
         # nspr passes "int*" through "unsigned int*".
         "-Wno-pointer-sign",
+      ]
 
-        "-Wno-incompatible-pointer-types",
-        "-Wno-pointer-sign",
-      ]
+      # nspr uses assert(!"foo") instead of assert(false && "foo").
+      configs -= [ "//build/config/clang:extra_warnings" ]
     }
   }
 
   component("nss") {
     output_name = "crnss"
     sources = [
       # Ensure at least one object file is produced, so that MSVC does not
       # warn when creating the static/shared library. See the note for
       # the "nssckbi" target for why the "nss" target was split as such.
       "nss/lib/nss/nssver.c",
     ]
 
-    public_deps = [ ":nss_static" ]
+    public_deps = [
+      ":nss_static",
+    ]
 
     if (include_nss_root_certs) {
       public_deps += [ ":nssckbi" ]
     }
 
     if (component_mode == "shared_library") {
       if (is_mac) {
         ldflags = [ "-all_load" ]
       } else if (is_win) {
         # Pass the def file to the linker.
-        ldflags = [
-          "/DEF:" + rebase_path("nss/exports_win.def", root_build_dir)
-        ]
+        ldflags =
+            [ "/DEF:" + rebase_path("nss/exports_win.def", root_build_dir) ]
       }
     }
   }
 
   config("nssckbi_config") {
     include_dirs = [ "nss/lib/ckfw/builtins" ]
   }
 
   # This is really more of a pseudo-target to work around the fact that
   # a single static_library target cannot contain two object files of the
@@ skipping 47 matching lines @@
       "nss/lib/ckfw/nssckmdt.h",
       "nss/lib/ckfw/nssckt.h",
       "nss/lib/ckfw/object.c",
       "nss/lib/ckfw/session.c",
       "nss/lib/ckfw/sessobj.c",
       "nss/lib/ckfw/slot.c",
       "nss/lib/ckfw/token.c",
       "nss/lib/ckfw/wrap.c",
     ]
 
-    configs -= [
-      "//build/config/compiler:chromium_code"
-    ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
 
     if (is_win) {
-      configs -= [
-        "//build/config/win:unicode",  # Requires 8-bit mode.
-      ]
+      configs -= [ "//build/config/win:unicode" ]  # Requires 8-bit mode.
     }
     configs += [ "//build/config/compiler:no_chromium_code" ]
 
     include_dirs = [ "nss/lib/ckfw" ]
     public_configs = [ ":nssckbi_config" ]
 
     public_deps = [
       ":nss_static",
     ]
   }
@@ skipping 413 matching lines @@
       "nss/lib/util/utilpars.h",
       "nss/lib/util/utilparst.h",
       "nss/lib/util/utilrename.h",
     ]
 
     sources -= [
       # mpi_arm.c is included by mpi_arm_mac.c.
       # NOTE: mpi_arm.c can be used directly on Linux. mpi_arm.c will need
       # to be excluded conditionally if we start to build NSS on Linux.
       "nss/lib/freebl/mpi/mpi_arm.c",
+
       # primes.c is included by mpprime.c.
       "nss/lib/freebl/mpi/primes.c",
+
       # unix_rand.c and win_rand.c are included by sysrand.c.
       "nss/lib/freebl/unix_rand.c",
       "nss/lib/freebl/win_rand.c",
+
       # debug_module.c is included by pk11load.c.
       "nss/lib/pk11wrap/debug_module.c",
     ]
 
-    configs -= [
-      "//build/config/compiler:chromium_code"
-    ]
+    configs -= [ "//build/config/compiler:chromium_code" ]
     if (is_win) {
-      configs -= [
-        "//build/config/win:unicode",  # Requires 8-bit mode.
-      ]
+      configs -= [ "//build/config/win:unicode" ]  # Requires 8-bit mode.
     }
     configs += [ "//build/config/compiler:no_chromium_code" ]
     public_configs = [ ":nss_static_config" ]
 
     cflags = []
 
     # Only need the defines and includes not in nss_static_config.
     defines = [
       "MP_API_COMPATIBLE",
       "NSS_DISABLE_DBM",
@@ skipping 206 matching lines @@
         "nss/lib/freebl/poly1305/poly1305.c",
       ]
     } else {
       sources -= [
         "nss/lib/freebl/chacha20/chacha20_vec.c",
         "nss/lib/freebl/poly1305/poly1305-donna-x64-sse2-incremental-source.c",
       ]
     }
 
     if (is_mac || is_ios) {
-      sources -= [
-        "nss/lib/freebl/mpi/mpi_amd64.c",
-      ]
+      sources -= [ "nss/lib/freebl/mpi/mpi_amd64.c" ]
       cflags += [
         "-include",
         rebase_path("//third_party/nss/nss/lib/freebl/nss_build_config_mac.h",
                     root_build_dir),
       ]
       defines += [
         "XP_UNIX",
         "DARWIN",
         "HAVE_STRERROR",
         "HAVE_BSD_FLOCK",
@@ skipping 24 matching lines @@
           "NSS_X86",
           "_X86_",
           "MP_ASSEMBLY_MULTIPLY",
           "MP_ASSEMBLY_SQUARE",
           "MP_ASSEMBLY_DIV_2DX1D",
           "MP_USE_UINT_DIGIT",
           "MP_NO_MP_WORD",
           "USE_HW_AES",
           "INTEL_GCM",
         ]
-        sources -= [
-          "nss/lib/freebl/mpi/mpi_amd64.c",
-        ]
-
+        sources -= [ "nss/lib/freebl/mpi/mpi_amd64.c" ]
       } else if (cpu_arch == "x64") {
         sources -= [
           "nss/lib/freebl/intel-aes-x86-masm.asm",
           "nss/lib/freebl/mpi/mpi_amd64.c",
           "nss/lib/freebl/mpi/mpi_x86_asm.c",
         ]
         defines += [
           "NSS_USE_64",
           "NSS_X86_OR_X64",
           "NSS_X64",
           "_AMD64_",
           "MP_CHAR_STORE_SLOW",
           "MP_IS_LITTLE_ENDIAN",
           "WIN64",
         ]
       }
     } else {
       # Not Windows.
       sources -= [
         # mpi_x86_asm.c contains MSVC inline assembly code.
         "nss/lib/freebl/mpi/mpi_x86_asm.c",
       ]
     }
 
     if (is_clang) {
       cflags += [
         # nss doesn"t explicitly cast between different enum types.
         "-Wno-conversion",
+
         # nss passes "const char*" through "void*".
         "-Wno-incompatible-pointer-types",
+
         # nss prefers `a && b || c` over `(a && b) || c`.
         "-Wno-logical-op-parentheses",
+
         # nss doesn"t use exhaustive switches on enums
         "-Wno-switch",
+
         # nss has some `unsigned < 0` checks.
         "-Wno-tautological-compare",
       ]
     }
 
     public_deps = [
       ":nspr",
     ]
     deps = [
       ":nspr",
       "//third_party/sqlite",
     ]
 
     if (is_win && cpu_arch == "x86") {
       deps += [ ":nss_static_avx" ]
     }
   }
 }  # Windows/Mac/iOS.
-