Doc: Add information about frames

- Describe differences between Qt WebKit and Qt WebEngine in
  the porting guide
- Replace references to frames with references to the view in
  the QWebEngineView docs
- Describe frames in the QWebEnginePage class overview
- Replace references to frames with references to pages where
  appropriate in the QWebEnginePage docs
- Describe the "security origin" concept that is related to
  frame handling

Change-Id: I8c952d507414058759537a6333649c37976c12e6
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc b/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc
index 1ec831ac2..d941e7bd1 100644
--- a/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc
+++ b/src/webenginewidgets/doc/src/qwebengineview_lgpl.qdoc
@@ -310,7 +310,7 @@
 /*!
     \fn void QWebEngineView::titleChanged(const QString &title)
 
-    This signal is emitted whenever the \a title of the main frame changes.
+    This signal is emitted whenever the \a title of the view changes.
 
     \sa title()
 */
@@ -359,10 +359,9 @@
 /*!
     \fn void QWebEngineView::loadProgress(int progress)
 
-    This signal is emitted every time an element in the web page
-    completes loading and the overall loading progress advances.
-
-    This signal tracks the progress of all child frames.
+    This signal is emitted every time an element in the web view
+    completes loading, such as an embedded image or a script. Therefore, it
+    tracks the collective progress of loading the web view.
 
     The current value is provided by \a progress and scales from 0 to 100,
     which is the default range of QProgressBar.