Implement granular cross-origin XHR for extensions.

chrome/common/render_messages_internal.h

Index: chrome/common/render_messages_internal.h
diff --git a/chrome/common/render_messages_internal.h b/chrome/common/render_messages_internal.h
index f94f8e32ad5e3b4a62e24509375d86af05785b9b..8439858a82710a143e504c35eba6ad71a57e64e2 100644
--- a/chrome/common/render_messages_internal.h
+++ b/chrome/common/render_messages_internal.h
@@ -591,10 +591,16 @@ IPC_BEGIN_MESSAGES(View)
 
   // Tell the renderer process which permissions the given extension has. See
   // Extension::Permissions for which elements correspond to which permissions.
-  IPC_MESSAGE_CONTROL2(ViewMsg_Extension_SetPermissions,
+  IPC_MESSAGE_CONTROL2(ViewMsg_Extension_SetAPIPermissions,
                        std::string /* extension_id */,
                        std::vector<std::string> /* permissions */)
 
+  // Tell the renderer process which host permissions the given extension has.
+  IPC_MESSAGE_CONTROL2(
+      ViewMsg_Extension_SetHostPermissions,
+      GURL /* source extension's origin */,
+      std::vector<URLPattern> /* URLPatterns the extension can access */)
+
   // Tell the renderer process all known page action ids for a particular
   // extension.
   IPC_MESSAGE_CONTROL2(ViewMsg_Extension_UpdatePageActions,