Use explicit WebString <-> string16 conversion methods in storage API files

content/child/indexed_db/indexed_db_key_builders.cc

 // Copyright (c) 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 "content/child/indexed_db/indexed_db_key_builders.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 22 matching lines @@
     for (size_t i = 0; i < array.size(); ++i)
       result.push_back(content::IndexedDBKeyBuilder::Build(array[i]));
   }
   return result;
 }
 
 static std::vector<base::string16> CopyArray(
     const WebVector<WebString>& array) {
   std::vector<base::string16> copy(array.size());
   for (size_t i = 0; i < array.size(); ++i)
-    copy[i] = array[i];
+    copy[i] = array[i].utf16();
   return copy;
 }
 
-
 namespace content {
 
 IndexedDBKey IndexedDBKeyBuilder::Build(const blink::WebIDBKey& key) {
   switch (key.keyType()) {
     case WebIDBKeyTypeArray:
       return IndexedDBKey(CopyKeyArray(key));
     case WebIDBKeyTypeBinary:
       return IndexedDBKey(
           std::string(key.binary().data(), key.binary().size()));
     case WebIDBKeyTypeString:
-      return IndexedDBKey(key.string());
+      return IndexedDBKey(key.string().utf16());
     case WebIDBKeyTypeDate:
       return IndexedDBKey(key.date(), WebIDBKeyTypeDate);
     case WebIDBKeyTypeNumber:
       return IndexedDBKey(key.number(), WebIDBKeyTypeNumber);
     case WebIDBKeyTypeNull:
     case WebIDBKeyTypeInvalid:
       return IndexedDBKey(key.keyType());
     case WebIDBKeyTypeMin:
     default:
       NOTREACHED();
       return IndexedDBKey();
   }
 }
 
 WebIDBKey WebIDBKeyBuilder::Build(const IndexedDBKey& key) {
   switch (key.type()) {
     case WebIDBKeyTypeArray: {
       const IndexedDBKey::KeyArray& array = key.array();
       blink::WebVector<WebIDBKey> web_array(array.size());
       for (size_t i = 0; i < array.size(); ++i) {
         web_array[i] = Build(array[i]);
       }
       return WebIDBKey::createArray(web_array);
     }
     case WebIDBKeyTypeBinary:
       return WebIDBKey::createBinary(key.binary());
     case WebIDBKeyTypeString:
-      return WebIDBKey::createString(key.string());
+      return WebIDBKey::createString(WebString::fromUTF16(key.string()));
     case WebIDBKeyTypeDate:
       return WebIDBKey::createDate(key.date());
     case WebIDBKeyTypeNumber:
       return WebIDBKey::createNumber(key.number());
     case WebIDBKeyTypeInvalid:
       return WebIDBKey::createInvalid();
     case WebIDBKeyTypeNull:
       return WebIDBKey::createNull();
     case WebIDBKeyTypeMin:
     default:
@@ skipping 15 matching lines @@
     const IndexedDBKeyRange& key_range) {
   return WebIDBKeyRange(WebIDBKeyBuilder::Build(key_range.lower()),
                         WebIDBKeyBuilder::Build(key_range.upper()),
                         key_range.lower_open(), key_range.upper_open());
 }
 
 IndexedDBKeyPath IndexedDBKeyPathBuilder::Build(
     const blink::WebIDBKeyPath& key_path) {
   switch (key_path.keyPathType()) {
     case blink::WebIDBKeyPathTypeString:
-      return IndexedDBKeyPath(key_path.string());
+      return IndexedDBKeyPath(key_path.string().utf16());
     case blink::WebIDBKeyPathTypeArray:
       return IndexedDBKeyPath(CopyArray(key_path.array()));
     case blink::WebIDBKeyPathTypeNull:
       return IndexedDBKeyPath();
     default:
       NOTREACHED();
       return IndexedDBKeyPath();
   }
 }
 
 blink::WebIDBKeyPath WebIDBKeyPathBuilder::Build(
     const IndexedDBKeyPath& key_path) {
   switch (key_path.type()) {
     case blink::WebIDBKeyPathTypeString:
-      return blink::WebIDBKeyPath::create(WebString(key_path.string()));
-    case blink::WebIDBKeyPathTypeArray:
-      return blink::WebIDBKeyPath::create(CopyArray(key_path.array()));
+      return blink::WebIDBKeyPath::create(
+          WebString::fromUTF16(key_path.string()));
+    case blink::WebIDBKeyPathTypeArray: {
+      WebVector<WebString> key_path_vector(key_path.array().size());
+      std::transform(key_path.array().begin(), key_path.array().end(),
+                     key_path_vector.begin(),
+                     [](const typename base::string16& s) {
+                       return WebString::fromUTF16(s);
+                     });
+      return blink::WebIDBKeyPath::create(key_path_vector);
+    }
     case blink::WebIDBKeyPathTypeNull:
       return blink::WebIDBKeyPath::createNull();
     default:
       NOTREACHED();
       return blink::WebIDBKeyPath::createNull();
   }
 }
 
 }  // namespace content