Added directwrite warmup for PPAPI processes.

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 <string>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/metrics/field_trial.h"
+#include "base/strings/string_number_conversions.h"

[palmer, 2015/09/15 21:43:43]

You don't use this.

[forshaw, 2015/09/16 12:46:57]

Used for DoubleToString below.

 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/browser_child_process_host_impl.h"
 #include "content/browser/plugin_service_impl.h"
 #include "content/browser/renderer_host/render_message_filter.h"
 #include "content/common/child_process_host_impl.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/content_switches_internal.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #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/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
     : public content::SandboxedProcessLauncherDelegate {
  public:
   PpapiPluginSandboxedProcessLauncherDelegate(bool is_broker,
                                               const PepperPluginInfo& info,
@@ skipping 343 matching lines @@
     }
     cmd_line->AppendSwitchASCII(switches::kPpapiFlashArgs, existing_args);
   }
 
   std::string locale = GetContentClient()->browser()->GetApplicationLocale();
   if (!locale.empty()) {
     // Pass on the locale so the plugin will know what language we're using.
     cmd_line->AppendSwitchASCII(switches::kLang, locale);
   }
 
+#if defined(OS_WIN)
+  cmd_line->AppendSwitchASCII(switches::kDeviceScaleFactor,
+                              base::DoubleToString(gfx::GetDPIScale()));
+#endif
+
   if (!plugin_launcher.empty())
     cmd_line->PrependWrapper(plugin_launcher);
 
   // On posix, never use the zygote for the broker. Also, only use the zygote if
   // we are not using a plugin launcher - having a plugin launcher means we need
   // to use another process instead of just forking the zygote.
   process_->Launch(
       new PpapiPluginSandboxedProcessLauncherDelegate(is_broker_,
                                                       info,
                                                       process_->GetHost()),
@@ skipping 94 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