Replace base::NullableString16(bool) usage with default constructor.

webkit/common/webdropdata.cc

 // Copyright 2013 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.
 
 #include "webkit/common/webdropdata.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
@@ skipping 13 matching lines @@
 WebDropData::FileInfo::FileInfo() {
 }
 
 WebDropData::FileInfo::FileInfo(const base::string16& path,
                                 const base::string16& display_name)
     : path(path),
       display_name(display_name) {
 }
 
 WebDropData::WebDropData(const WebDragData& drag_data)
-    : referrer_policy(WebKit::WebReferrerPolicyDefault),
-      text(base::NullableString16(true)),
-      html(base::NullableString16(true)) {
+    : referrer_policy(WebKit::WebReferrerPolicyDefault) {
   const WebVector<WebDragData::Item>& item_list = drag_data.items();
   for (size_t i = 0; i < item_list.size(); ++i) {
     const WebDragData::Item& item = item_list[i];
     switch (item.storageType) {
       case WebDragData::Item::StorageTypeString: {
         if (EqualsASCII(item.stringType, ui::Clipboard::kMimeTypeText)) {
           text = base::NullableString16(item.stringData, false);
           break;
         }
         if (EqualsASCII(item.stringType, ui::Clipboard::kMimeTypeURIList)) {
@@ skipping 21 matching lines @@
       case WebDragData::Item::StorageTypeFilename:
         // TODO(varunjain): This only works on chromeos. Support win/mac/gtk.
         filenames.push_back(FileInfo(item.filenameData,
                                      item.displayNameData));
         break;
     }
   }
 }
 
 WebDropData::WebDropData()
-    : referrer_policy(WebKit::WebReferrerPolicyDefault),
-      text(base::NullableString16(true)),
-      html(base::NullableString16(true)) {
+    : referrer_policy(WebKit::WebReferrerPolicyDefault) {
 }
 
 WebDropData::~WebDropData() {
 }