Enable speech input by default and remove unused code.

chrome/browser/renderer_host/browser_render_process_host.h

Index: chrome/browser/renderer_host/browser_render_process_host.h
diff --git a/chrome/browser/renderer_host/browser_render_process_host.h b/chrome/browser/renderer_host/browser_render_process_host.h
index f1bc47a708ef4dd8641c87d93cf40eeaa8f603d8..983f215aaa9a7d2cd9dc6f914585c834702463cc 100644
--- a/chrome/browser/renderer_host/browser_render_process_host.h
+++ b/chrome/browser/renderer_host/browser_render_process_host.h
@@ -125,10 +125,6 @@ class BrowserRenderProcessHost : public RenderProcessHost,
   // functions to thre renderer process.
   void InitExtensions();
 
-  // Initialize support for speech input API. Informs the renderer if the API
-  // is enabled or not.
-  void InitSpeechInput();
-
   // Sends the renderer process a new set of user scripts.
   void SendUserScriptsUpdate(base::SharedMemory* shared_memory);