Use WebIDBKeyPath type in WebKit API, implement IndexedDBKeyPath type.

webkit/support/test_webkit_platform_support.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_SUPPORT_TEST_WEBKIT_PLATFORM_SUPPORT_H_
 #define WEBKIT_SUPPORT_TEST_WEBKIT_PLATFORM_SUPPORT_H_
 
 #include "base/compiler_specific.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebGamepads.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebGraphicsContext3D.h"
@@ skipping 56 matching lines @@
       WebKit::WebLocalizedString::Name name,
       const WebKit::WebString& value1,
       const WebKit::WebString& value2) OVERRIDE;
   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) || defined(OS_MACOSX)
   void SetThemeEngine(WebKit::WebThemeEngine* engine);
   virtual WebKit::WebThemeEngine *themeEngine() OVERRIDE;
 #endif
 
   virtual WebKit::WebSharedWorkerRepository* sharedWorkerRepository() OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* createOffscreenGraphicsContext3D(
       const WebKit::WebGraphicsContext3D::Attributes&);
   virtual bool canAccelerate2dCanvas();
@@ skipping 44 matching lines @@
   bool unit_test_mode_;
   WebKit::WebGamepads gamepad_data_;
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   WebKit::WebThemeEngine* active_theme_engine_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(TestWebKitPlatformSupport);
 };
 
 #endif  // WEBKIT_SUPPORT_TEST_WEBKIT_PLATFORM_SUPPORT_H_