Hooking MHTML generation to the browser.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index e3011ee54ce9ac45fb431c40a4def543578c04f0..f42ab8e5b94dd08ad2981d35ff0f65d606b5e93f 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -26,6 +26,7 @@
 #include "chrome/common/translate_errors.h"
 #include "content/common/common_param_traits.h"
 #include "ipc/ipc_message_macros.h"
+#include "ipc/ipc_platform_file.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCache.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebConsoleMessage.h"
 #include "ui/gfx/rect.h"
@@ -261,6 +262,11 @@ IPC_MESSAGE_ROUTED1(ViewMsg_SetIsPrerendering,
 IPC_MESSAGE_CONTROL1(ViewMsg_SetIsIncognitoProcess,
                      bool /* is_incognito_processs */)
 
+// Instructs the renderer to save the current page to MHTML.
+IPC_MESSAGE_ROUTED2(ViewMsg_SavePageAsMHTML,
+                    int /* job_id */,
+                    IPC::PlatformFileForTransit /* file handle */)
+
 //-----------------------------------------------------------------------------
 // TabContents messages
 // These are messages sent from the renderer to the browser process.
@@ -481,6 +487,11 @@ IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_CanTriggerClipboardWrite,
                            GURL /* url */,
                            bool /* allowed */)
 
+// Notifies the browser that the page was or was not saved as MHTML.
+IPC_MESSAGE_ROUTED2(ViewHostMsg_SavedPageAsMHTML,
+                    int /* job_id*/,
+                    bool /* success */)
+
 // Suggest results -----------------------------------------------------------
 
 IPC_MESSAGE_ROUTED3(ViewHostMsg_SetSuggestions,