Upstream various ios/web utilities and helpers

ios/web/web_state/js/crw_js_message_dynamic_manager.mm

Index: ios/web/web_state/js/crw_js_message_dynamic_manager.mm
diff --git a/ios/web/web_state/js/crw_js_message_dynamic_manager.mm b/ios/web/web_state/js/crw_js_message_dynamic_manager.mm
index 50059f0ce074a72623b6331616fe3fd154f7d92a..9067a1979652804b9d5688c24244c2cf1180023a 100644
--- a/ios/web/web_state/js/crw_js_message_dynamic_manager.mm
+++ b/ios/web/web_state/js/crw_js_message_dynamic_manager.mm
@@ -4,15 +4,20 @@
 
 #import "ios/web/web_state/js/crw_js_message_dynamic_manager.h"
 
+#include "base/logging.h"
 #import "ios/web/web_state/js/crw_js_common_manager.h"
-#include "ios/web/web_view_util.h"
 
 @implementation CRWJSMessageDynamicManager
 
 - (NSString*)scriptPath {
-  if (web::IsWKWebViewEnabled())
-    return @"message_dynamic_wk";
-  return @"message_dynamic_ui";
+  switch ([[self receiver] webViewType]) {
+    case web::UI_WEB_VIEW_TYPE:
+      return @"message_dynamic_ui";
+    case web::WK_WEB_VIEW_TYPE:
+      return @"message_dynamic_wk";
+  }
+  NOTREACHED();
+  return nil;
 }
 
 - (NSString*)presenceBeacon {