feat: webFrameMain.origin

docs/api/web-frame-main.md

@@ -169,6 +169,13 @@ convenient when `nodeIntegrationInSubFrames` is not enabled.
 
 A `string` representing the current URL of the frame.
 
+#### `frame.origin` _Readonly_
+
+A `string` representing the current origin of the frame. This may be different
+from the URL. For instance, if the frame is a child window opened to
+`about:blank`, then `frame.origin` will return the parent frame's origin, while
+`frame.url` will return the empty string.
+
 #### `frame.top` _Readonly_
 
 A `WebFrameMain | null` representing top frame in the frame hierarchy to which `frame`

shell/browser/api/electron_api_web_frame_main.cc

@@ -296,6 +296,12 @@ GURL WebFrameMain::URL() const {
   return render_frame_->GetLastCommittedURL();
 }
 
+std::string WebFrameMain::Origin() const {
+  if (!CheckRenderFrame())
+    return std::string();
+  return render_frame_->GetLastCommittedOrigin().Serialize();
+}
+
 blink::mojom::PageVisibilityState WebFrameMain::VisibilityState() const {
   if (!CheckRenderFrame())
     return blink::mojom::PageVisibilityState::kHidden;
@@ -397,6 +403,7 @@ v8::Local<v8::ObjectTemplate> WebFrameMain::FillObjectTemplate(
       .SetProperty("processId", &WebFrameMain::ProcessID)
       .SetProperty("routingId", &WebFrameMain::RoutingID)
       .SetProperty("url", &WebFrameMain::URL)
+      .SetProperty("origin", &WebFrameMain::Origin)
       .SetProperty("visibilityState", &WebFrameMain::VisibilityState)
       .SetProperty("top", &WebFrameMain::Top)
       .SetProperty("parent", &WebFrameMain::Parent)

shell/browser/api/electron_api_web_frame_main.h

@@ -109,6 +109,7 @@ class WebFrameMain : public gin::Wrappable<WebFrameMain>,
   int ProcessID() const;
   int RoutingID() const;
   GURL URL() const;
+  std::string Origin() const;
   blink::mojom::PageVisibilityState VisibilityState() const;
 
   content::RenderFrameHost* Top() const;