Safe numeric library: base/numerics (copied from Chromium)

webrtc/base/BUILD.gn

Index: webrtc/base/BUILD.gn
diff --git a/webrtc/base/BUILD.gn b/webrtc/base/BUILD.gn
index 5726a26e6aeb03782fa9dc77437491d4162e438c..ac2a3ac59c4293dc748e8c82ad101dc9396611f5 100644
--- a/webrtc/base/BUILD.gn
+++ b/webrtc/base/BUILD.gn
@@ -141,8 +141,6 @@ static_library("rtc_base_approved") {
     "rate_statistics.cc",
     "rate_statistics.h",
     "refcount.h",
-    "safe_conversions.h",
-    "safe_conversions_impl.h",
     "scoped_ptr.h",
     "scoped_ref_ptr.h",
     "stringencode.cc",
@@ -181,10 +179,6 @@ static_library("rtc_base") {
   cflags = []
   cflags_cc = []
   libs = []
-  deps = []
-  public_deps = [
-    ":rtc_base_approved",
-  ]
 
   configs += [
     "..:common_config",
@@ -198,6 +192,13 @@ static_library("rtc_base") {
 
   defines = [ "LOGGING=1" ]
 
+  deps = [
+    ":safe_numerics",
+  ]
+  public_deps = [
+    ":rtc_base_approved",
+  ]
+
   sources = [
     "arraysize.h",
     "asyncfile.cc",
@@ -657,3 +658,16 @@ source_set("gtest_prod") {
     "gtest_prod_util.h",
   ]
 }
+
+# GYP version: webrtc/base/base.gyp:safe_numerics
+source_set("safe_numerics") {
+  deps = [
+    ":rtc_base_approved",
+  ]
+  sources = [
+    "numerics/safe_conversions.h",
+    "numerics/safe_conversions_impl.h",
+    "numerics/safe_math.h",
+    "numerics/safe_math_impl.h",
+  ]
+}