Enable WKWebView phone number detection.

ios/web/web_state/ui/wk_web_view_configuration_provider.mm

Index: ios/web/web_state/ui/wk_web_view_configuration_provider.mm
diff --git a/ios/web/web_state/ui/wk_web_view_configuration_provider.mm b/ios/web/web_state/ui/wk_web_view_configuration_provider.mm
index 647d596a6e64596e706eaa745ea02f67fe034af4..b2e6f3a67123a85c4b59d6170c96d58d17b5c3f5 100644
--- a/ios/web/web_state/ui/wk_web_view_configuration_provider.mm
+++ b/ios/web/web_state/ui/wk_web_view_configuration_provider.mm
@@ -63,6 +63,12 @@ WKWebViewConfigurationProvider::GetWebViewConfiguration() {
       [configuration_
           setWebsiteDataStore:[WKWebsiteDataStore nonPersistentDataStore]];
     }
+// TODO(crbug.com/620878) Remove these guards after moving to iOS10 SDK.
+#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
+    if (base::ios::IsRunningOnIOS10OrLater()) {
+      [configuration_ setDataDetectorTypes:WKDataDetectorTypePhoneNumber];
+    }
+#endif
     // setJavaScriptCanOpenWindowsAutomatically is required to support popups.
     [[configuration_ preferences] setJavaScriptCanOpenWindowsAutomatically:YES];
     [[configuration_ userContentController]