Clean the new CRWContextMenuController

ios/web/web_state/context_menu_params.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/web/public/web_state/context_menu_params.h"
 
+#include "base/strings/sys_string_conversions.h"
+#include "components/url_formatter/url_formatter.h"
+#include "ios/web/public/referrer_util.h"
+
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace web {
 
 ContextMenuParams::ContextMenuParams()
     : referrer_policy(ReferrerPolicyDefault), location(CGPointZero) {}
 
 ContextMenuParams::ContextMenuParams(const ContextMenuParams& other) = default;
 
 ContextMenuParams::~ContextMenuParams() {}
 
+ContextMenuParams::ContextMenuParams(NSDictionary* element)
+    : ContextMenuParams() {
+  NSString* title = nil;
+  NSString* href = element[@"href"];
+  if (href) {
+    link_url = GURL(base::SysNSStringToUTF8(href));
+    if (link_url.SchemeIs(url::kJavaScriptScheme)) {
+      title = @"JavaScript";
+    } else {
+      base::string16 URLText = url_formatter::FormatUrl(link_url);
+      title = base::SysUTF16ToNSString(URLText);
+    }
+  }
+  NSString* src = element[@"src"];
+  if (src) {
+    src_url = GURL(base::SysNSStringToUTF8(src));
+    if (!title)
+      title = [src copy];
+    if ([title hasPrefix:base::SysUTF8ToNSString(url::kDataScheme)])
+      title = nil;
+  }
+  NSString* titleAttribute = element[@"title"];
+  if (titleAttribute)
+    title = titleAttribute;
+  if (title) {
+    menu_title.reset([title copy]);
+  }
+  NSString* referrerPolicy = element[@"referrerPolicy"];
+  if (referrerPolicy) {
+    referrer_policy =
+        web::ReferrerPolicyFromString(base::SysNSStringToUTF8(referrerPolicy));
+  }
+  NSString* innerText = element[@"innerText"];
+  if ([innerText length] > 0) {
+    link_text.reset([innerText copy]);
+  }
+}
+
 }  // namespace web