OOP PDF: Change the save toolbar button to match the save menu behavior.

extensions/common/extension_messages.h

Index: extensions/common/extension_messages.h
diff --git a/extensions/common/extension_messages.h b/extensions/common/extension_messages.h
index 45160b61360beffa7d41e0315bfac127f1e3e771..179b261263a47942bce09cf2a26c6ef96348ba15 100644
--- a/extensions/common/extension_messages.h
+++ b/extensions/common/extension_messages.h
@@ -761,9 +761,10 @@ IPC_MESSAGE_CONTROL4(ExtensionHostMsg_AttachGuest,
                      base::DictionaryValue /* attach_params */)
 
 // Tells the browser to create a mime handler guest view for a plugin.
-IPC_MESSAGE_CONTROL4(ExtensionHostMsg_CreateMimeHandlerViewGuest,
+IPC_MESSAGE_CONTROL5(ExtensionHostMsg_CreateMimeHandlerViewGuest,
                      int /* render_frame_id */,
                      std::string /* embedder_url */,
+                     std::string /* content_url */,
                      std::string /* mime_type */,
                      int /* element_instance_id */)