Allow script to request durable storage permission (chrome side)

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 2e7d77a987884907027c9592b092779f2be946ff..381e575f6cbb446d714f997d60d00b1bfc5b114c 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -67,6 +67,7 @@
 #include "content/renderer/devtools/devtools_agent.h"
 #include "content/renderer/dom_automation_controller.h"
 #include "content/renderer/dom_utils.h"
+#include "content/renderer/durable_dispatcher.h"
 #include "content/renderer/external_popup_menu.h"
 #include "content/renderer/geolocation_dispatcher.h"
 #include "content/renderer/gpu/gpu_benchmarking_extension.h"
@@ -123,6 +124,7 @@
 #include "third_party/WebKit/public/platform/WebURLError.h"
 #include "third_party/WebKit/public/platform/WebURLResponse.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
+#include "third_party/WebKit/public/platform/modules/quota/WebDurableStorageDispatcher.h"
 #include "third_party/WebKit/public/web/WebColorSuggestion.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFrameWidget.h"
@@ -3764,6 +3766,14 @@ blink::WebAppBannerClient* RenderFrameImpl::appBannerClient() {
   return app_banner_client_.get();
 }
 
+blink::WebDurableStorageDispatcher*
+RenderFrameImpl::durableStorageDispatcher() {
+  if (!durable_storage_dispatcher_) {
+    durable_storage_dispatcher_.reset(new DurableStorageDispatcher(this));
+  }
+  return durable_storage_dispatcher_.get();
+}
+
 #if defined(ENABLE_WEBVR)
 blink::WebVRClient* RenderFrameImpl::webVRClient() {
   if (!vr_dispatcher_)