Add warning to LoadRequest about INVALID_INITIATOR_ORIGIN (213) failure condition (see issue #2586)

include/capi/cef_frame_capi.h

@@ -33,7 +33,7 @@
 // by hand. See the translator.README.txt file in the tools directory for
 // more information.
 //
-// $hash=6bef924a259845dbf03e9cf5084ff7feb2771034$
+// $hash=5f3cb132c1116a36c746c246ebeded195c917718$
 //
 
 #ifndef CEF_INCLUDE_CAPI_CEF_FRAME_CAPI_H_
@@ -131,6 +131,10 @@ typedef struct _cef_frame_t {
 
   ///
   // Load the request represented by the |request| object.
+  //
+  // WARNING: This function will fail with "bad IPC message" reason
+  // INVALID_INITIATOR_ORIGIN (213) unless you first navigate to the request
+  // origin using some other mechanism (LoadURL, link click, etc).
   ///
   void(CEF_CALLBACK* load_request)(struct _cef_frame_t* self,
                                    struct _cef_request_t* request);

include/cef_frame.h

@@ -131,6 +131,10 @@ class CefFrame : public virtual CefBaseRefCounted {
 
   ///
   // Load the request represented by the |request| object.
+  //
+  // WARNING: This method will fail with "bad IPC message" reason
+  // INVALID_INITIATOR_ORIGIN (213) unless you first navigate to the
+  // request origin using some other mechanism (LoadURL, link click, etc).
   ///
   /*--cef()--*/
   virtual void LoadRequest(CefRefPtr<CefRequest> request) = 0;

tests/cefclient/browser/test_runner.cc

@@ -100,6 +100,16 @@ void RunRequestTest(CefRefPtr<CefBrowser> browser) {
   // Create a new request
   CefRefPtr<CefRequest> request(CefRequest::Create());
 
+  if (browser->GetMainFrame()->GetURL().ToString().find("http://tests/") != 0) {
+    // The LoadRequest method will fail with "bad IPC message" reason
+    // INVALID_INITIATOR_ORIGIN (213) unless you first navigate to the
+    // request origin using some other mechanism (LoadURL, link click, etc).
+    Alert(browser,
+          "Please first navigate to a http://tests/ URL. "
+          "For example, first load Tests > Other Tests.");
+    return;
+  }
+
   // Set the request URL
   request->SetURL("http://tests/request");