Scale menu position back to viewport in pepper plugin

content/renderer/pepper/renderer_ppapi_host_impl.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 CONTENT_RENDERER_PEPPER_RENDERER_PPAPI_HOST_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_RENDERER_PPAPI_HOST_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 86 matching lines @@
   bool IsRunningInProcess() const override;
   std::string GetPluginName() const override;
   void SetToExternalPluginHost() override;
   void CreateBrowserResourceHosts(
       PP_Instance instance,
       const std::vector<IPC::Message>& nested_msgs,
       const base::Callback<void(const std::vector<int>&)>& callback)
       const override;
   GURL GetDocumentURL(PP_Instance pp_instance) const override;
 
+  void set_viewport_to_dip_scale(float viewport_to_dip_scale) {
+    DCHECK_LT(0, viewport_to_dip_scale_);
+    viewport_to_dip_scale_ = viewport_to_dip_scale;
+  }
+
  private:
   RendererPpapiHostImpl(PluginModule* module,
                         ppapi::proxy::HostDispatcher* dispatcher,
                         const ppapi::PpapiPermissions& permissions);
   RendererPpapiHostImpl(PluginModule* module,
                         const ppapi::PpapiPermissions& permissions);
 
   // Retrieves the plugin instance object associated with the given PP_Instance
   // and validates that it is one of the instances associated with our module.
   // Returns NULL on failure.
@@ skipping 12 matching lines @@
 
   // Null when running out-of-process.
   std::unique_ptr<PepperInProcessRouter> in_process_router_;
 
   // Whether the plugin is running in process.
   bool is_running_in_process_;
 
   // Whether this is a host for external plugins.
   bool is_external_plugin_host_;
 
+  // The scale between the viewport and dip.
+  float viewport_to_dip_scale_ = 1.0f;
+
   DISALLOW_COPY_AND_ASSIGN(RendererPpapiHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_RENDERER_PPAPI_HOST_IMPL_H_