Implement <webview>.addContentScript/removeContentScript API [1]

extensions/browser/guest_view/web_view/web_view_guest.cc

Index: extensions/browser/guest_view/web_view/web_view_guest.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.cc b/extensions/browser/guest_view/web_view/web_view_guest.cc
index 3f7b9d880211494acaa7da6b0c320ef97da37ea6..7470fecba9a005d4af935a38e04c15a68d0a35d6 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -37,6 +37,7 @@
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/guest_view/guest_view_manager.h"
 #include "extensions/browser/guest_view/web_view/web_view_constants.h"
+#include "extensions/browser/guest_view/web_view/web_view_content_script_manager.h"
 #include "extensions/browser/guest_view/web_view/web_view_permission_helper.h"
 #include "extensions/browser/guest_view/web_view/web_view_permission_types.h"
 #include "extensions/browser/guest_view/web_view/web_view_renderer_state.h"
@@ -872,6 +873,14 @@ void WebViewGuest::PushWebViewStateToIOThread() {
   web_view_info.owner_extension_id = owner_extension_id();
   web_view_info.rules_registry_id = rules_registry_id_;
 
+  // Get content scripts IDs added by the guest.
+  WebViewContentScriptManager* manager =
+      WebViewContentScriptManager::Get(browser_context());
+  if (manager) {

[Devlin, 2015/04/14 23:04:57]

When can this be null?

[Xi Han, 2015/04/15 19:43:56]

Change to DCHECK.

+    web_view_info.content_script_ids = manager->GetContentScriptIDSet(
+        web_view_info.embedder_process_id, web_view_info.instance_id);
+  }
+
   content::BrowserThread::PostTask(
       content::BrowserThread::IO,
       FROM_HERE,