Import QtWebKit public headers.

This is the first step toward re-implementing part of the QWebView
API on top of QtWebEngine. The plan is to import the complete headers
to facilitate diffs and progress tracking.

Changes squashed in this commit:
- Use the QWebEngine prefix for class names
- Strip out non-public members and directives
- Allow building using those headers by disabling the Q_PROPERTY
  macros and by adding a dummy implementation for virtual methods
  directly in the header
- Update the widgetsnanobrowser example to comply with the slight
  changes from the previous API

Change-Id: Ia7efa5430f775d09b493544430a04856cc7928f6
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/examples/widgets/widgetsnanobrowser/widgetwindow.cpp b/examples/widgets/widgetsnanobrowser/widgetwindow.cpp
index 9f2ccbe6a..8d19cc2c8 100644
--- a/examples/widgets/widgetsnanobrowser/widgetwindow.cpp
+++ b/examples/widgets/widgetsnanobrowser/widgetwindow.cpp
@@ -42,6 +42,8 @@
 #include "widgetwindow.h"
 
 #include "qwebengineview.h"
+#include "qwebenginepage.h"
+#include "qwebenginehistory.h"
 #include "../../common/util.h"
 
 #include <QShortcut>
@@ -120,7 +122,7 @@ void WidgetWindow::loadStarted()
 void WidgetWindow::loadFinished(bool success)
 {
     Q_UNUSED(success);
-    forwardButton->setEnabled(m_webView->canGoForward());
-    backButton->setEnabled(m_webView->canGoBack());
+    forwardButton->setEnabled(m_webView->page()->history()->canGoForward());
+    backButton->setEnabled(m_webView->page()->history()->canGoBack());
     reloadButton->setIcon(QIcon(":/icons/view-refresh.png"));
 }