Use WebIDBKeyPath type in WebKit API, implement IndexedDBKeyPath type.

webkit/tools/test_shell/test_shell_webkit_init.h

 // Copyright (c) 2012 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.
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBKIT_INIT_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBKIT_INIT_H_
 
 #include "base/compiler_specific.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBFactory.h"
@@ skipping 62 matching lines @@
 
   virtual WebKit::WebString defaultLocale() OVERRIDE;
 
   virtual WebKit::WebStorageNamespace* createLocalStorageNamespace(
       const WebKit::WebString& path, unsigned quota) OVERRIDE;
 
   virtual WebKit::WebIDBFactory* idbFactory() OVERRIDE;
 
   virtual void createIDBKeysFromSerializedValuesAndKeyPath(
       const WebKit::WebVector<WebKit::WebSerializedScriptValue>& values,
-      const WebKit::WebString& keyPath,
+      const WebKit::WebIDBKeyPath& keyPath,
       WebKit::WebVector<WebKit::WebIDBKey>& keys_out) OVERRIDE;
 
   virtual WebKit::WebSerializedScriptValue injectIDBKeyIntoSerializedValue(
       const WebKit::WebIDBKey& key,
       const WebKit::WebSerializedScriptValue& value,
-      const WebKit::WebString& keyPath) OVERRIDE;
+      const WebKit::WebIDBKeyPath& keyPath) OVERRIDE;
 
 
 #if defined(OS_WIN)
   void SetThemeEngine(WebKit::WebThemeEngine* engine) {
     active_theme_engine_ = engine ?
         engine : WebKitPlatformSupportImpl::themeEngine();
   }
 
   virtual WebKit::WebThemeEngine *themeEngine() OVERRIDE {
     return active_theme_engine_;
@@ skipping 28 matching lines @@
   SimpleWebCookieJarImpl cookie_jar_;
   scoped_refptr<TestShellWebBlobRegistryImpl> blob_registry_;
   SimpleFileSystem file_system_;
 
 #if defined(OS_WIN)
   WebKit::WebThemeEngine* active_theme_engine_;
 #endif
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBKIT_INIT_H_