Create a visible window with class name Chrome_RenderWidgetHostHWND which corresponds to the bounds…

ui/views/win/hwnd_message_handler.cc

Index: ui/views/win/hwnd_message_handler.cc
===================================================================
--- ui/views/win/hwnd_message_handler.cc	(revision 247584)
+++ ui/views/win/hwnd_message_handler.cc	(working copy)
@@ -788,7 +788,7 @@
 }
 
 void HWNDMessageHandler::SetCapture() {
-  DCHECK(!HasCapture());
+  // DCHECK(!HasCapture());

[scottmg, 2014/01/31 21:52:01]

when is not doing this necessary? wouldn't it either be on the legacy, or us?

[ananta, 2014/01/31 23:56:26]

The dummy Chrome_RenderWidgetHostHWND class sets capture to the parent.
When the parent receives a lbuttondown, it sets capture again which causes this
DCHECK to fire.

   ::SetCapture(hwnd());
 }
 
@@ -1333,7 +1333,8 @@
 }
 
 void HWNDMessageHandler::OnCaptureChanged(HWND window) {
-  delegate_->HandleCaptureLost();
+  if (!HasCapture())
+    delegate_->HandleCaptureLost();
 }
 
 void HWNDMessageHandler::OnClose() {