Add some debugging checks to help find repro for crash during child frame creation.

BUG=397744

Review URL: https://codereview.chromium.org/841853002

Cr-Commit-Position: refs/heads/master@{#310440}

1 files changed, 5 insertions, 3 deletions

diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 36dec29..473b185 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1930,9 +1930,10 @@ blink::WebFrame* RenderFrameImpl::createChildFrame(
   // Synchronously notify the browser of a child frame creation to get the
   // routing_id for the RenderFrame.
   int child_routing_id = MSG_ROUTING_NONE;
-  Send(new FrameHostMsg_CreateChildFrame(routing_id_,
-                                         base::UTF16ToUTF8(name),
-                                         &child_routing_id));
+  CHECK(Send(new FrameHostMsg_CreateChildFrame(routing_id_,
+                                               base::UTF16ToUTF8(name),
+                                               &child_routing_id)));
+
   // Allocation of routing id failed, so we can't create a child frame. This can
   // happen if this RenderFrameImpl's IPCs are being filtered when in swapped
   // out state.
@@ -1949,6 +1950,7 @@ blink::WebFrame* RenderFrameImpl::createChildFrame(
     base::debug::Alias(&is_swapped_out_);
     base::debug::DumpWithoutCrashing();
 #endif
+    NOTREACHED() << "Failed to allocate routing id for child frame.";
     return NULL;
   }