Add iOS10 helper to determine current running iOS version.

BUG=none

Review-Url: https://codereview.chromium.org/2077693002
Cr-Commit-Position: refs/heads/master@{#400307}
diff --git a/base/ios/ios_util.h b/base/ios/ios_util.h
index 3b276ff..fe9ec20 100644
--- a/base/ios/ios_util.h
+++ b/base/ios/ios_util.h
@@ -19,6 +19,9 @@
 // Returns whether the operating system is iOS 9 or later.
 BASE_EXPORT bool IsRunningOnIOS9OrLater();
 
+// Returns whether the operating system is iOS 10 or later.
+BASE_EXPORT bool IsRunningOnIOS10OrLater();
+
 // Returns whether the operating system is at the given version or later.
 BASE_EXPORT bool IsRunningOnOrLater(int32_t major,
                                     int32_t minor,