WKWebView: Added cert verification API to web controller.

ios/web/public/test/test_browser_state.cc

Index: ios/web/public/test/test_browser_state.cc
diff --git a/ios/web/public/test/test_browser_state.cc b/ios/web/public/test/test_browser_state.cc
index d001bc3f90ddd3998ccb0da420cd8fc582efcde4..cdb050a2b12318b73be81ec1396a98cba0c4e8ce 100644
--- a/ios/web/public/test/test_browser_state.cc
+++ b/ios/web/public/test/test_browser_state.cc
@@ -15,7 +15,9 @@ namespace {
 class TestContextURLRequestContextGetter : public net::URLRequestContextGetter {
  public:
   TestContextURLRequestContextGetter()
-      : null_task_runner_(new base::NullTaskRunner) {}
+      : null_task_runner_(new base::NullTaskRunner) {
+    context_.set_net_log(&net_log_);
+  }
 
   net::URLRequestContext* GetURLRequestContext() override { return &context_; }
 
@@ -28,6 +30,7 @@ class TestContextURLRequestContextGetter : public net::URLRequestContextGetter {
   ~TestContextURLRequestContextGetter() override {}
 
   net::TestURLRequestContext context_;
+  net::NetLog net_log_;
   scoped_refptr<base::SingleThreadTaskRunner> null_task_runner_;
 };