Prepare declarativeContent API for new script injection feature. Added Javascript types and functio…

extensions/common/extension_messages.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for extensions.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 435 matching lines @@
                     content::ConsoleMessageLevel /* level */,
                     std::string /* message */)
 
 // Notify the renderer that its window has closed.
 IPC_MESSAGE_ROUTED0(ExtensionMsg_AppWindowClosed)
 
 // Notify the renderer that an extension wants notifications when certain
 // searches match the active page.  This message replaces the old set of
 // searches, and triggers ExtensionHostMsg_OnWatchedPageChange messages from
 // each tab to keep the browser updated about changes.
-IPC_MESSAGE_CONTROL1(ExtensionMsg_WatchPages,
+IPC_MESSAGE_CONTROL2(ExtensionMsg_WatchPages,
+                     std::string, /* event_name */
                      std::vector<std::string> /* CSS selectors */)
 
 // Send by the browser to indicate a Blob handle has been transferred to the
 // renderer. This is sent after the actual extension response, and depends on
 // the sequential nature of IPCs so that the blob has already been caught.
 // This is a separate control message, so that the renderer process will send
 // an acknowledgement even if the RenderView has closed or navigated away.
 IPC_MESSAGE_CONTROL1(ExtensionMsg_TransferBlobs,
                      std::vector<std::string> /* blob_uuids */)
 
@@ skipping 186 matching lines @@
 
 // Notifies the browser process that a tab has started or stopped matching
 // certain conditions.  This message is sent in response to several events:
 //
 // * ExtensionMsg_WatchPages was received, updating the set of conditions.
 // * A new page is loaded.  This will be sent after
 //   FrameHostMsg_DidCommitProvisionalLoad. Currently this only fires for the
 //   main frame.
 // * Something changed on an existing frame causing the set of matching searches
 //   to change.
-IPC_MESSAGE_ROUTED1(ExtensionHostMsg_OnWatchedPageChange,
+IPC_MESSAGE_ROUTED2(ExtensionHostMsg_OnWatchedPageChange,
+                    std::string, /* event_name */
                     std::vector<std::string> /* Matching CSS selectors */)
 
 // Sent by the renderer when it has received a Blob handle from the browser.
 IPC_MESSAGE_CONTROL1(ExtensionHostMsg_TransferBlobsAck,
                      std::vector<std::string> /* blob_uuids */)