Move SwapOut methods to RenderFrameHost.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index 001167a5109e8b80d367fdc1fe140a9cfc143833..2c4a595617d7ca08e0fa7f595a98a286bc659ee4 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -863,11 +863,6 @@ IPC_MESSAGE_ROUTED0(ViewMsg_CantFocus)
 // PageGroupLoadDeferrer is on the stack for SwapOut.
 IPC_MESSAGE_ROUTED0(ViewMsg_SuppressDialogsUntilSwapOut)
 
-// Instructs the renderer to swap out for a cross-site transition, including
-// running the unload event handler. Expects a SwapOut_ACK message when
-// finished.
-IPC_MESSAGE_ROUTED0(ViewMsg_SwapOut)
-
 // Instructs the renderer to close the current page, including running the
 // onunload event handler.
 //
@@ -1224,10 +1219,6 @@ IPC_MESSAGE_ROUTED5(ViewHostMsg_Find_Reply,
                     int /* active_match_ordinal */,
                     bool /* final_update */)
 
-// Indicates that the current renderer has swapped out, after a SwapOut
-// message.
-IPC_MESSAGE_ROUTED0(ViewHostMsg_SwapOut_ACK)
-
 // Indicates that the current page has been closed, after a ClosePage
 // message.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_ClosePage_ACK)