Allow platform apps to open links in the browser.

chrome/common/extensions/extension_messages.h

Index: chrome/common/extensions/extension_messages.h
diff --git a/chrome/common/extensions/extension_messages.h b/chrome/common/extensions/extension_messages.h
index a79c9def51b9723a9858ed67f72d183ae26e1334..ae2b7f9cae47e5fa6a92447568c74fa95e97f9b2 100644
--- a/chrome/common/extensions/extension_messages.h
+++ b/chrome/common/extensions/extension_messages.h
@@ -13,6 +13,7 @@
 #include "chrome/common/extensions/url_pattern_set.h"
 #include "chrome/common/view_type.h"
 #include "chrome/common/web_apps.h"
+#include "content/public/common/common_param_traits.h"
 #include "ipc/ipc_message_macros.h"
 
 #define IPC_MESSAGE_START ExtensionMsgStart
@@ -325,6 +326,11 @@ IPC_MESSAGE_ROUTED2(ExtensionMsg_DispatchOnDisconnect,
 IPC_MESSAGE_CONTROL1(ExtensionMsg_SetChannel,
                      int /* channel */)
 
+// Adds a logging message to the renderer's root frame DevTools console.
+IPC_MESSAGE_ROUTED2(ExtensionMsg_AddMessageToConsole,
+                    content::ConsoleMessageLevel /* level */,
+                    std::string /* message */)
+
 // Messages sent from the renderer to the browser.
 
 // A renderer sends this message when an extension process starts an API