Add related_applications field to manifest parser.

content/common/manifest_manager_messages.h

Index: content/common/manifest_manager_messages.h
diff --git a/content/common/manifest_manager_messages.h b/content/common/manifest_manager_messages.h
index 881ff6b6435df37b6f09ca65566e628677b57743..5966759d33447f713eaeee606a06088c05ba877c 100644
--- a/content/common/manifest_manager_messages.h
+++ b/content/common/manifest_manager_messages.h
@@ -17,6 +17,10 @@
 IPC_ENUM_TRAITS_MAX_VALUE(content::Manifest::DisplayMode,
                           content::Manifest::DISPLAY_MODE_BROWSER)
 
+IPC_ENUM_TRAITS_MAX_VALUE(
+    content::Manifest::RelatedApplicationPlatform,
+    content::Manifest::RELATED_APPLICATION_PLATFORM_PLAY)
+
 IPC_STRUCT_TRAITS_BEGIN(content::Manifest::Icon)
   IPC_STRUCT_TRAITS_MEMBER(src)
   IPC_STRUCT_TRAITS_MEMBER(type)
@@ -24,6 +28,12 @@ IPC_STRUCT_TRAITS_BEGIN(content::Manifest::Icon)
   IPC_STRUCT_TRAITS_MEMBER(sizes)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(content::Manifest::RelatedApplication)
+  IPC_STRUCT_TRAITS_MEMBER(platform)
+  IPC_STRUCT_TRAITS_MEMBER(url)
+  IPC_STRUCT_TRAITS_MEMBER(id)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(content::Manifest)
   IPC_STRUCT_TRAITS_MEMBER(name)
   IPC_STRUCT_TRAITS_MEMBER(short_name)
@@ -31,6 +41,8 @@ IPC_STRUCT_TRAITS_BEGIN(content::Manifest)
   IPC_STRUCT_TRAITS_MEMBER(display)
   IPC_STRUCT_TRAITS_MEMBER(orientation)
   IPC_STRUCT_TRAITS_MEMBER(icons)
+  IPC_STRUCT_TRAITS_MEMBER(related_applications)
+  IPC_STRUCT_TRAITS_MEMBER(prefer_related_applications)
   IPC_STRUCT_TRAITS_MEMBER(gcm_sender_id)
 IPC_STRUCT_TRAITS_END()