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

chrome/common/extensions/api/speech/tts_engine_manifest_handler.h

Index: chrome/common/extensions/api/speech/tts_engine_manifest_handler.h
diff --git a/chrome/common/extensions/api/speech/tts_engine_manifest_handler.h b/chrome/common/extensions/api/speech/tts_engine_manifest_handler.h
index c7773365140e4ea6ff3b4020e9d3f502a6b293a2..9c24b530e2a18f893fe795307d977c03ea47d0da 100644
--- a/chrome/common/extensions/api/speech/tts_engine_manifest_handler.h
+++ b/chrome/common/extensions/api/speech/tts_engine_manifest_handler.h
@@ -32,8 +32,7 @@ class TtsEngineManifestHandler : public ManifestHandler {
   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