Index: content/common/frame_messages.h |
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h |
index 61d4241b01a27a9db204bd9c2decda7c451597e0..1660fa8b5d9aa1a1b743b386935f3d2277d0fb92 100644 |
--- a/content/common/frame_messages.h |
+++ b/content/common/frame_messages.h |
@@ -372,7 +372,10 @@ IPC_MESSAGE_ROUTED3(FrameHostMsg_DidFailLoadWithError, |
// Sent when the renderer starts loading the page. This corresponds to |
// Blink's notion of the throbber starting. Note that sometimes you may get |
// duplicates of these during a single load. |
-IPC_MESSAGE_ROUTED0(FrameHostMsg_DidStartLoading) |
+// |to_different_document| will be true unless the load is a fragment |
+// navigation, or triggered by history.pushState/replaceState. |
+IPC_MESSAGE_ROUTED1(FrameHostMsg_DidStartLoading, |
+ bool /* to_different_document */) |
// Sent when the renderer is done loading a page. This corresponds to Blink's |
// notion of the throbber stopping. |