diff --git a/WebKit2/ChangeLog b/WebKit2/ChangeLog
index 9a0637f7ff27..45b7f5017c53 100644
--- a/WebKit2/ChangeLog
+++ b/WebKit2/ChangeLog
@@ -1,3 +1,15 @@
+2010-07-22  Andras Becsi  <abecsi@webkit.org>
+
+        Unreviewed trivial build fix.
+
+        [Qt] Mend remaining issues to fix the WebKit2 build.
+
+        * Shared/qt/UpdateChunk.h: add missing function
+        (WebKit::UpdateChunk::isEmpty):
+        * UIProcess/API/qt/qwkpage_p.h: Add stub implementation
+        (QWKPagePrivate::pageDidEnterAcceleratedCompositing):
+        (QWKPagePrivate::pageDidLeaveAcceleratedCompositing):
+
 2010-07-22  Andras Becsi  <abecsi@webkit.org>
 
         Reviewed by Antonio Gomes.
diff --git a/WebKit2/Shared/qt/UpdateChunk.h b/WebKit2/Shared/qt/UpdateChunk.h
index d14f690947a7..d962dedfd9b0 100644
--- a/WebKit2/Shared/qt/UpdateChunk.h
+++ b/WebKit2/Shared/qt/UpdateChunk.h
@@ -47,6 +47,7 @@ class UpdateChunk {
 
     uint8_t* data();
     const WebCore::IntRect& rect() const { return m_rect; }
+    bool isEmpty() const { return m_rect.isEmpty(); }
 
     void encode(CoreIPC::ArgumentEncoder&) const;
     static bool decode(CoreIPC::ArgumentDecoder&, UpdateChunk&);
diff --git a/WebKit2/UIProcess/API/qt/qwkpage_p.h b/WebKit2/UIProcess/API/qt/qwkpage_p.h
index 6409a5fb31cd..3e676efdff8d 100644
--- a/WebKit2/UIProcess/API/qt/qwkpage_p.h
+++ b/WebKit2/UIProcess/API/qt/qwkpage_p.h
@@ -40,6 +40,10 @@ class QWKPagePrivate : public WebKit::PageClient {
 
     void init(const QSize& viewportSize, WebKit::DrawingAreaProxy*);
 
+#if USE(ACCELERATED_COMPOSITING)
+    void pageDidEnterAcceleratedCompositing() {}
+    void pageDidLeaveAcceleratedCompositing() {}
+#endif // USE(ACCELERATED_COMPOSITING)
     virtual void processDidExit() {}
     virtual void processDidRevive() {}
     virtual void setCursor(const WebCore::Cursor&) {}