Hook up external monitor detection in PepperFlashDRM.

chrome/browser/renderer_host/pepper/pepper_flash_drm_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 "chrome/browser/renderer_host/pepper/pepper_flash_drm_host.h"
 
 #if defined(OS_WIN)
 #include <Windows.h>
 #endif
 
@@ skipping 152 matching lines @@
   if (monitor_id) {
     context->reply_msg = PpapiPluginMsg_FlashDRM_GetHmonitorReply(monitor_id);
     return PP_OK;
   }
   return PP_ERROR_FAILED;
 }
 
 int32_t PepperFlashDRMHost::OnHostMsgMonitorIsExternal(
     ppapi::host::HostMessageContext* context) {
   int64_t monitor_id = monitor_finder_->GetMonitor();
-  if (monitor_id) {
-    // TODO(bbudge) get information about whether monitor is external.
-    context->reply_msg =
-        PpapiPluginMsg_FlashDRM_MonitorIsExternalReply(PP_FALSE);
-    return PP_OK;
-  }
-  return PP_ERROR_FAILED;
+  if (!monitor_id)
+    return PP_ERROR_FAILED;
+
+  PP_Bool is_external = PP_FALSE;
+#if defined(OS_MACOSX)
+  if (!MonitorFinder::IsMonitorBuiltIn(monitor_id))
+    is_external = PP_TRUE;
+#endif
+  context->reply_msg =
+      PpapiPluginMsg_FlashDRM_MonitorIsExternalReply(is_external);
+  return PP_OK;
 }
 
 void PepperFlashDRMHost::GotDeviceID(
     ppapi::host::ReplyMessageContext reply_context,
     const std::string& id,
     int32_t result) {
   if (id.empty() && result == PP_OK) {
     NOTREACHED();
     result = PP_ERROR_FAILED;
   }
   reply_context.params.set_result(result);
   host()->SendReply(reply_context,
                     PpapiPluginMsg_FlashDRM_GetDeviceIDReply(id));
 }
 
 }  // namespace chrome