Enable speech input by default and remove unused code.

chrome/renderer/render_thread.h

Index: chrome/renderer/render_thread.h
diff --git a/chrome/renderer/render_thread.h b/chrome/renderer/render_thread.h
index d4bcbaf04eeadf5c731286c316a3e3fb4afd5927..02a2fa1a155d6065ee5cf8d018c3c267a590986e 100644
--- a/chrome/renderer/render_thread.h
+++ b/chrome/renderer/render_thread.h
@@ -324,8 +324,6 @@ class RenderThread : public RenderThreadBase,
 
   void OnGetAccessibilityTree();
 
-  void OnSetSpeechInputEnabled(bool enabled);
-
   // Gather usage statistics from the in-memory cache and inform our host.
   // These functions should be call periodically so that the host can make
   // decisions about how to allocation resources using current information.
@@ -391,10 +389,6 @@ class RenderThread : public RenderThreadBase,
   bool suspend_webkit_shared_timer_;
   bool notify_webkit_of_modal_loop_;
 
-  // True if this renderer has speech input enabled, set once during thread
-  // initialization.
-  bool is_speech_input_enabled_;
-
   // Timer that periodically calls IdleHandler.
   base::RepeatingTimer<RenderThread> idle_timer_;