Extend content::DesktopMediaID to allow Aura windows as capture sources.

content/browser/renderer_host/media/video_capture_manager.cc

Index: content/browser/renderer_host/media/video_capture_manager.cc
diff --git a/content/browser/renderer_host/media/video_capture_manager.cc b/content/browser/renderer_host/media/video_capture_manager.cc
index 0bda4fd467164bf7e22f150961ef94bc243a4655..68c9d56808ecdb72421a74960e9ee7ba2c90f156 100644
--- a/content/browser/renderer_host/media/video_capture_manager.cc
+++ b/content/browser/renderer_host/media/video_capture_manager.cc
@@ -16,8 +16,8 @@
 #include "content/browser/renderer_host/media/video_capture_controller_event_handler.h"
 #include "content/browser/renderer_host/media/web_contents_video_capture_device.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/desktop_media_id.h"
 #include "content/public/common/content_switches.h"
-#include "content/public/common/desktop_media_id.h"
 #include "content/public/common/media_stream_request.h"
 #include "media/base/scoped_histogram_timer.h"
 #include "media/video/capture/fake_video_capture_device.h"
@@ -164,13 +164,14 @@ void VideoCaptureManager::DoStartDeviceOnDeviceThread(
     case MEDIA_DESKTOP_VIDEO_CAPTURE: {
 #if defined(ENABLE_SCREEN_CAPTURE)
       DesktopMediaID id = DesktopMediaID::Parse(entry->id);
-      if (id.type != DesktopMediaID::TYPE_NONE) {
-#if defined(OS_CHROMEOS)
-        // TODO(hshi): enable this path for Ash windows in metro mode.
+#if defined(USE_AURA)
+      if (id.type == DesktopMediaID::TYPE_AURA_WINDOW) {
         video_capture_device.reset(DesktopCaptureDeviceAura::Create(id));
-#else
-        video_capture_device = DesktopCaptureDevice::Create(id);
+      } else
 #endif
+      if (id.type != DesktopMediaID::TYPE_NONE &&
+          id.type != DesktopMediaID::TYPE_AURA_WINDOW) {
+        video_capture_device = DesktopCaptureDevice::Create(id);
       }
 #endif  // defined(ENABLE_SCREEN_CAPTURE)
       break;