Stub out not yet implemented controller methods, so we don't have to wait for timeouts but fail imm…

content/shell/layout_test_controller_host.cc

Index: content/shell/layout_test_controller_host.cc
diff --git a/content/shell/layout_test_controller_host.cc b/content/shell/layout_test_controller_host.cc
index b1b8563c12dbf9640c33a0211e2431e555ff4cc4..eeb6063c1bd6dd24ee366c78daf9746213f90201 100644
--- a/content/shell/layout_test_controller_host.cc
+++ b/content/shell/layout_test_controller_host.cc
@@ -91,6 +91,7 @@ bool LayoutTestControllerHost::OnMessageReceived(
         ShellViewHostMsg_SetShouldStayOnPageAfterHandlingBeforeUnload,
         OnSetShouldStayOnPageAfterHandlingBeforeUnload)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_WaitUntilDone, OnWaitUntilDone)
+    IPC_MESSAGE_HANDLER(ShellViewHostMsg_NotImplemented, OnNotImplemented)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -192,4 +193,17 @@ void LayoutTestControllerHost::OnWaitUntilDone() {
   wait_until_done_ = true;
 }
 
+void LayoutTestControllerHost::OnNotImplemented(
+    const std::string& object_name,
+    const std::string& property_name) {
+  if (captured_dump_)
+    return;
+  printf("FAIL: NOT IMPLEMENTED: %s.%s\n",
+         object_name.c_str(), property_name.c_str());
+  fprintf(stderr, "FAIL: NOT IMPLEMENTED: %s.%s\n",
+          object_name.c_str(), property_name.c_str());
+  watchdog_.Cancel();
+  CaptureDump();
+}
+
 }  // namespace content