Delete some unused code found by -Wunused-function

ppapi/proxy/ppp_instance_proxy.cc

 // 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.
 
 #include "ppapi/proxy/ppp_instance_proxy.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "ppapi/c/pp_var.h"
@@ skipping 10 matching lines @@
 #include "ppapi/shared_impl/ppb_view_shared.h"
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_view_api.h"
 
 namespace ppapi {
 namespace proxy {
 
 namespace {
 
-void GetFullscreenStates(PP_Instance instance,
-                         HostDispatcher* dispatcher,
-                         PP_Bool* fullscreen,
-                         PP_Bool* flash_fullscreen) {
-  const PPB_Fullscreen* fullscreen_interface =
-      static_cast<const PPB_Fullscreen*>(
-          dispatcher->local_get_interface()(PPB_FULLSCREEN_INTERFACE));
-  DCHECK(fullscreen_interface);
-  *fullscreen = fullscreen_interface->IsFullscreen(instance);
-}
-
 PP_Bool IsFlashFullscreen(PP_Instance instance,
                           HostDispatcher* dispatcher) {
   const PPB_FlashFullscreen* flash_fullscreen_interface =
       static_cast<const PPB_FlashFullscreen*>(
           dispatcher->local_get_interface()(PPB_FLASHFULLSCREEN_INTERFACE));
   DCHECK(flash_fullscreen_interface);
   return flash_fullscreen_interface->IsFullscreen(instance);
 }
 
 PP_Bool DidCreate(PP_Instance instance,
@@ skipping 209 matching lines @@
   // with. The plugin will normally take an additional reference which will keep
   // the resource alive in the plugin (and the one reference in the renderer
   // representing all plugin references).
   // Once all references at the plugin side are released, the renderer side will
   // be notified and release the reference added in HandleDocumentLoad() above.
   PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(plugin_loader);
 }
 
 }  // namespace proxy
 }  // namespace ppapi