Change manifest handler interface to always (implicitly) pass the entire manifest to handlers.

chrome/common/extensions/api/speech/tts_engine_manifest_handler.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 CHROME_COMMON_EXTENSIONS_API_SPEECH_TTS_ENGINE_MANIFEST_HANDLER_H_
 #define CHROME_COMMON_EXTENSIONS_API_SPEECH_TTS_ENGINE_MANIFEST_HANDLER_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 14 matching lines @@
 
   static const std::vector<TtsVoice>* GetTtsVoices(const Extension* extension);
 };
 
 // Parses the "tts_engine" manifest key.
 class TtsEngineManifestHandler : public ManifestHandler {
  public:
   TtsEngineManifestHandler();
   virtual ~TtsEngineManifestHandler();
 
-  virtual bool Parse(const base::Value* value, Extension* extension,
-                     string16* error) OVERRIDE;
+  virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_API_SPEECH_TTS_ENGINE_MANIFEST_HANDLER_H_