Add logic to switch to DirectWrite font proxy via field trial.

content/browser/ppapi_plugin_process_host.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 "content/browser/ppapi_plugin_process_host.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 18 matching lines @@
 #include "content/public/common/pepper_plugin_info.h"
 #include "content/public/common/process_type.h"
 #include "content/public/common/sandbox_type.h"
 #include "content/public/common/sandboxed_process_launcher_delegate.h"
 #include "ipc/ipc_switches.h"
 #include "net/base/network_change_notifier.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_WIN)
+#include "content/browser/renderer_host/dwrite_font_proxy_message_filter_win.h"
 #include "content/common/sandbox_win.h"
 #include "sandbox/win/src/process_mitigations.h"
 #include "sandbox/win/src/sandbox_policy.h"
 #include "ui/gfx/win/dpi.h"
 #endif
 
 namespace content {
 
 // NOTE: changes to this class need to be reviewed by the security team.
 class PpapiPluginSandboxedProcessLauncherDelegate
@@ skipping 243 matching lines @@
       PROCESS_TYPE_PPAPI_PLUGIN, this));
 
   host_impl_.reset(new BrowserPpapiHostImpl(this, permissions_, info.name,
                                             info.path, profile_data_directory,
                                             false /* in_process */,
                                             false /* external_plugin */));
 
   filter_ = new PepperMessageFilter();
   process_->AddFilter(filter_.get());
   process_->GetHost()->AddFilter(host_impl_->message_filter().get());
+#if defined(OS_WIN)
+  process_->AddFilter(new DWriteFontProxyMessageFilter());
+#endif
 
   GetContentClient()->browser()->DidCreatePpapiPlugin(host_impl_.get());
 
   // Only request network status updates if the plugin has dev permissions.
   if (permissions_.HasPermission(ppapi::PERMISSION_DEV))
     network_observer_.reset(new PluginNetworkObserver(this));
 }
 
 PpapiPluginProcessHost::PpapiPluginProcessHost()
     : is_broker_(true) {
@@ skipping 204 matching lines @@
   // sent_requests_ queue should be the one that the plugin just created.
   Client* client = sent_requests_.front();
   sent_requests_.pop();
 
   const ChildProcessData& data = process_->GetData();
   client->OnPpapiChannelOpened(channel_handle, base::GetProcId(data.handle),
                                data.id);
 }
 
 }  // namespace content