webContents: providing response headers in did-get-response-details event

atom/browser/api/atom_api_web_contents.cc

@@ -278,13 +278,19 @@ void WebContents::DidStopLoading(content::RenderViewHost* render_view_host) {
 
 void WebContents::DidGetResourceResponseStart(
     const content::ResourceRequestDetails& details) {
+  auto context = AtomBrowserContext::Get();
+  std::string headers;
+  if (context)
+    headers = context->GetNetworkDelegate()->GetResponseHeaders(details.url);
+
   Emit("did-get-response-details",
        details.socket_address.IsEmpty(),
        details.url,
        details.original_url,
        details.http_response_code,
        details.method,
-       details.referrer);
+       details.referrer,
+       headers);
 }
 
 void WebContents::DidGetRedirectForResourceRequest(

atom/renderer/lib/web-view/guest-view-internal.coffee

@@ -10,7 +10,8 @@ WEB_VIEW_EVENTS =
   'did-start-loading': []
   'did-stop-loading': []
   'did-get-response-details': ['status', 'newUrl', 'originalUrl',
-                               'httpResponseCode', 'requestMethod', 'referrer']
+                               'httpResponseCode', 'requestMethod', 'referrer',
+                               'headers']
   'did-get-redirect-request': ['oldUrl', 'newUrl', 'isMainFrame']
   'dom-ready': []
   'console-message': ['level', 'message', 'line', 'sourceId']

docs/api/browser-window.md

@@ -666,9 +666,11 @@ Corresponds to the points in time when the spinner of the tab stops spinning.
 * `httpResponseCode` Integer
 * `requestMethod` String
 * `referrer` String
+* `headers` String
 
 Emitted when details regarding a requested resource is available.
 `status` indicates the socket connection to download the resource.
+`headers` is key-value string separated by new-line character.
 
 ### Event: 'did-get-redirect-request'
 

docs/api/web-view-tag.md

@@ -325,9 +325,11 @@ Corresponds to the points in time when the spinner of the tab stops spinning.
 * `httpResponseCode` Integer
 * `requestMethod` String
 * `referrer` String
+* `headers` String
 
 Fired when details regarding a requested resource is available.
 `status` indicates socket connection to download the resource.
+`headers` is key-value string separated by new-line character.
 
 ### did-get-redirect-request