Allow declarative webrequest and webrequest in extensions.

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 b3dda987a080982e9fcc984ca330266b3ccf5556..2e124e01dc070380423b783f5e2f6949dd845d69 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -31,6 +31,7 @@
 #include "content/public/common/stop_find_action.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/browser/api/extensions_api_client.h"
+#include "extensions/browser/api/web_request/web_request_api.h"
 #include "extensions/browser/api/web_view/web_view_internal_api.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/guest_view/guest_view_manager.h"
@@ -132,6 +133,19 @@ void ParsePartitionParam(const base::DictionaryValue& create_params,
   }
 }
 
+void RemoveWebViewEventListenersOnIOThread(
+    void* profile,
+    const std::string& extension_id,
+    int embedder_process_id,
+    int view_instance_id) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+  ExtensionWebRequestEventRouter::GetInstance()->RemoveWebViewEventListeners(
+      profile,
+      extension_id,
+      embedder_process_id,
+      view_instance_id);
+}
+
 }  // namespace
 
 // static
@@ -336,8 +350,15 @@ void WebViewGuest::DidStopLoading() {
 }
 
 void WebViewGuest::EmbedderDestroyed() {
-  if (web_view_guest_delegate_)
-    web_view_guest_delegate_->OnEmbedderDestroyed();
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &RemoveWebViewEventListenersOnIOThread,
+          browser_context(),
+          embedder_extension_id(),
+          embedder_render_process_id(),
+          view_instance_id()));
 }
 
 void WebViewGuest::GuestDestroyed() {