Update to Chromium revision 304f01a1 (#358063)

- Improve ordering of CefLoadHandler callbacks. OnLoadingStateChange will
  be called before and after all calls to OnLoadStart and OnLoadEnd.
  OnLoadStart/OnLoadEnd calls will occur as matching pairs
  (see http://crbug.com/539952#c2).
- Remove the |requesting_url| argument to CefGeolocationHandler::
  OnCancelGeolocationPermission. Clients can use the |request_id| argument
  to track this information themselves.
- Fix a crash when loading the PDF extension in multiple browsers with a
  custom CefRequestContext (issue #1757).

libcef/browser/browser_context_impl.cc

@@ -9,7 +9,7 @@
 #include "libcef/browser/browser_context_proxy.h"
 #include "libcef/browser/context.h"
 #include "libcef/browser/download_manager_delegate.h"
-#include "libcef/browser/permission_manager.h"
+#include "libcef/browser/permissions/permission_manager.h"
 #include "libcef/browser/prefs/browser_prefs.h"
 #include "libcef/browser/ssl_host_state_delegate.h"
 #include "libcef/browser/thread_util.h"
@@ -326,10 +326,15 @@ content::SSLHostStateDelegate*
 
 content::PermissionManager* CefBrowserContextImpl::GetPermissionManager() {
   if (!permission_manager_.get())
-    permission_manager_.reset(new CefPermissionManager());
+    permission_manager_.reset(new CefPermissionManager(this));
   return permission_manager_.get();
 }
 
+content::BackgroundSyncController*
+    CefBrowserContextImpl::GetBackgroundSyncController() {
+  return nullptr;
+}
+
 PrefService* CefBrowserContextImpl::GetPrefs() {
   return pref_service_.get();
 }