Changes to content/ to facilitate new zoom extension API (work in progress)

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 b37ef7728464c457ac33c374d4d3f0c878c4e595..0a3e9c554feec2fda9308a2e8323fb84d28dbb9a 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -717,10 +717,11 @@ IPC_MESSAGE_ROUTED2(ViewMsg_SetZoomLevelForLoadingURL,
 // Set the zoom level for a particular url, so all render views
 // displaying this url can update their zoom levels to match.
 // If scheme is empty, then only host is used for matching.
-IPC_MESSAGE_CONTROL3(ViewMsg_SetZoomLevelForCurrentURL,
+IPC_MESSAGE_CONTROL4(ViewMsg_SetZoomLevelForCurrentURL,
                      std::string /* scheme */,
                      std::string /* host */,
-                     double /* zoom_level */)
+                     double /* zoom_level */,
+                     std::set<int> /* exceptions */)
 
 // Change encoding of page in the renderer.
 IPC_MESSAGE_ROUTED1(ViewMsg_SetPageEncoding,