Enable <webview>.executeScript outside of Apps and Extensions [1]

extensions/browser/api/web_view/web_view_internal_api.cc

Index: extensions/browser/api/web_view/web_view_internal_api.cc
diff --git a/extensions/browser/api/web_view/web_view_internal_api.cc b/extensions/browser/api/web_view/web_view_internal_api.cc
index 4b041e911764efabd574034f0e175b015ffebd65..40478fc75f900bb614c57eb436141fbd70b1efe0 100644
--- a/extensions/browser/api/web_view/web_view_internal_api.cc
+++ b/extensions/browser/api/web_view/web_view_internal_api.cc
@@ -102,7 +102,23 @@ bool WebViewInternalExecuteCodeFunction::Init() {
     return false;
 
   details_ = details.Pass();
-  return true;
+
+  if (extension()) {
+    set_host_id(make_scoped_ptr(new HostID(HostID::EXTENSIONS,
+                                           extension()->id())));
+    return true;
+  }
+
+  auto rvh = render_view_host();
+  if (rvh) {
+    WebContents* web_contents = WebContents::FromRenderViewHost(rvh);
+    if (web_contents && web_contents->GetWebUI()) {
+      const GURL& url = rvh->GetSiteInstance()->GetSiteURL();
+      set_host_id(make_scoped_ptr(new HostID(HostID::WEBUI, url.spec())));
+      return true;
+    }
+  }
+  return false;
 }
 
 bool WebViewInternalExecuteCodeFunction::ShouldInsertCSS() const {