[GTK] Scrolling iframes, doesn't redraw their content

https://bugs.webkit.org/show_bug.cgi?id=167581

Reviewed by Carlos Garcia Campos.

Take into account whether we are using AC or not in order to repaint an area after scrolling.

No behaviour change, no new tests.

* WebProcess/WebCoreSupport/WebChromeClient.cpp:
(WebKit::WebChromeClient::invalidateContentsForSlowScroll):


Canonical link: https://commits.webkit.org/184611@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@211367 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebKit2/ChangeLog

@@ -1,3 +1,17 @@
+2017-01-30  Miguel Gomez  <magomez@igalia.com>
+
+        [GTK] Scrolling iframes, doesn't redraw their content
+        https://bugs.webkit.org/show_bug.cgi?id=167581
+
+        Reviewed by Carlos Garcia Campos.
+
+        Take into account whether we are using AC or not in order to repaint an area after scrolling.
+
+        No behaviour change, no new tests.
+
+        * WebProcess/WebCoreSupport/WebChromeClient.cpp:
+        (WebKit::WebChromeClient::invalidateContentsForSlowScroll):
+
 2017-01-30  Carlos Garcia Campos  <cgarcia@igalia.com>
 
         Unreviewed. Fix GTK+ debug build after r211365.

Source/WebKit2/WebProcess/WebCoreSupport/WebChromeClient.cpp

@@ -510,10 +510,13 @@ void WebChromeClient::invalidateContentsForSlowScroll(const IntRect& rect)
 
     m_page.pageDidScroll();
 #if USE(COORDINATED_GRAPHICS)
-    m_page.drawingArea()->scroll(rect, IntSize());
-#else
-    m_page.drawingArea()->setNeedsDisplayInRect(rect);
+    FrameView* frameView = m_page.mainFrame()->view();
+    if (frameView && frameView->delegatesScrolling()) {
+        m_page.drawingArea()->scroll(rect, IntSize());
+        return;
+    }
 #endif
+    m_page.drawingArea()->setNeedsDisplayInRect(rect);
 }
 
 void WebChromeClient::scroll(const IntSize& scrollDelta, const IntRect& scrollRect, const IntRect& clipRect)