Add resourceType arg to webContents did-get-response-details event.

Fixes #5074 and follows @zcbenz's recommendation to expose ResourceTypeToString from atom_network_delegate publicly.
Also adds testing for other arguments to the `did-get-response-details` events, since there were no existing tests for them.

atom/browser/api/atom_api_web_contents.cc

@@ -14,6 +14,7 @@
 #include "atom/browser/atom_browser_context.h"
 #include "atom/browser/atom_browser_main_parts.h"
 #include "atom/browser/native_window.h"
+#include "atom/browser/net/atom_network_delegate.h"
 #include "atom/browser/web_contents_permission_helper.h"
 #include "atom/browser/web_contents_preferences.h"
 #include "atom/browser/web_view_guest_delegate.h"
@@ -587,7 +588,8 @@ void WebContents::DidGetResourceResponseStart(
        details.http_response_code,
        details.method,
        details.referrer,
-       details.headers.get());
+       details.headers.get(),
+       ResourceTypeToString(details.resource_type));
 }
 
 void WebContents::DidGetRedirectForResourceRequest(

atom/browser/net/atom_network_delegate.cc

@@ -10,15 +10,12 @@
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "content/public/browser/browser_thread.h"
-#include "content/public/browser/resource_request_info.h"
 #include "net/url_request/url_request.h"
 
 using content::BrowserThread;
 
 namespace atom {
 
-namespace {
-
 const char* ResourceTypeToString(content::ResourceType type) {
   switch (type) {
     case content::RESOURCE_TYPE_MAIN_FRAME:
@@ -39,6 +36,8 @@ const char* ResourceTypeToString(content::ResourceType type) {
       return "other";
   }
 }
+    
+namespace {
 
 void RunSimpleListener(const AtomNetworkDelegate::SimpleListener& listener,
                        scoped_ptr<base::DictionaryValue> details) {

atom/browser/net/atom_network_delegate.h

@@ -15,6 +15,7 @@
 #include "net/base/net_errors.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
+#include "content/public/browser/resource_request_info.h"
 
 namespace extensions {
 class URLPattern;
@@ -24,6 +25,8 @@ namespace atom {
 
 using URLPatterns = std::set<extensions::URLPattern>;
 
+const char* ResourceTypeToString(content::ResourceType type);
+
 class AtomNetworkDelegate : public brightray::NetworkDelegate {
  public:
   using ResponseCallback = base::Callback<void(const base::DictionaryValue&)>;

spec/api-browser-window-spec.js

@@ -101,6 +101,32 @@ describe('browser-window module', function () {
       w.loadURL('about:blank')
     })
 
+    it('should emit did-get-response-details event', function (done) {
+      // expected {fileName: resourceType} pairs
+      var expectedResources = {
+        'did-get-response-details.html': 'mainFrame',
+        'logo.png': 'image'
+      }
+      var responses = 0;
+      w.webContents.on('did-get-response-details', function (event, status, newUrl, oldUrl, responseCode, method, referrer, headers, resourceType) {
+        responses++
+        var fileName = newUrl.slice(newUrl.lastIndexOf('/') + 1)
+        var expectedType = expectedResources[fileName]
+        assert(!!expectedType, `Unexpected response details for ${newUrl}`)
+        assert(typeof status === 'boolean', 'status should be boolean')
+        assert.equal(responseCode, 200)
+        assert.equal(method, 'GET')
+        assert(typeof referrer === 'string', 'referrer should be string')
+        assert(!!headers, 'headers should be present')
+        assert(typeof headers === 'object', 'headers should be object')
+        assert.equal(resourceType, expectedType, 'Incorrect resourceType')
+        if (responses === Object.keys(expectedResources).length) {
+          done()
+        }
+      })
+      w.loadURL('file://' + path.join(fixtures, 'pages', 'did-get-response-details.html'))
+    })
+
     it('should emit did-fail-load event for files that do not exist', function (done) {
       w.webContents.on('did-fail-load', function (event, code, desc, url, isMainFrame) {
         assert.equal(code, -6)

spec/fixtures/pages/did-get-response-details.html

@@ -0,0 +1,5 @@
+<html>
+<body>
+  <img src="../assets/logo.png" />
+</body>
+</html>