Remove unused in-process pepper APIs

ppapi/proxy/ppb_instance_proxy.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 PPAPI_PROXY_PPB_INSTANCE_PROXY_H_
 #define PPAPI_PROXY_PPB_INSTANCE_PROXY_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 58 matching lines @@
   PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size) override;
   Resource* GetSingletonResource(PP_Instance instance,
                                  SingletonResourceID id) override;
   int32_t RequestInputEvents(PP_Instance instance,
                              uint32_t event_classes) override;
   int32_t RequestFilteringInputEvents(PP_Instance instance,
                                       uint32_t event_classes) override;
   void StartTrackingLatency(PP_Instance instance) override;
   void ClearInputEventRequest(PP_Instance instance,
                               uint32_t event_classes) override;
-  void ZoomChanged(PP_Instance instance, double factor) override;
-  void ZoomLimitsChanged(PP_Instance instance,
-                         double minimum_factor,
-                         double maximium_factor) override;
   void PostMessage(PP_Instance instance, PP_Var message) override;
   int32_t RegisterMessageHandler(PP_Instance instance,
                                  void* user_data,
                                  const PPP_MessageHandler_0_2* handler,
                                  PP_Resource message_loop) override;
   void UnregisterMessageHandler(PP_Instance instance) override;
   PP_Bool SetCursor(PP_Instance instance,
                     PP_MouseCursor_Type type,
                     PP_Resource image,
                     const PP_Point* hot_spot) override;
@@ skipping 218 matching lines @@
   // Other helpers.
   void CancelAnyPendingRequestSurroundingText(PP_Instance instance);
 
   ProxyCompletionCallbackFactory<PPB_Instance_Proxy> callback_factory_;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_INSTANCE_PROXY_H_