diff --git a/libcef/browser/osr/render_widget_host_view_osr.cc b/libcef/browser/osr/render_widget_host_view_osr.cc
index 160295d94..f0aa83d38 100644
--- a/libcef/browser/osr/render_widget_host_view_osr.cc
+++ b/libcef/browser/osr/render_widget_host_view_osr.cc
@@ -1375,6 +1375,7 @@ void CefRenderWidgetHostViewOSR::ResizeRootLayer() {
 
   root_layer_->SetBounds(gfx::Rect(size));
   compositor_->SetScaleAndSize(scale_factor_, size_in_pixels);
+  PlatformResizeCompositorWidget(size_in_pixels);
 }
 
 void CefRenderWidgetHostViewOSR::OnBeginFrameTimerTick() {
diff --git a/libcef/browser/osr/render_widget_host_view_osr.h b/libcef/browser/osr/render_widget_host_view_osr.h
index f9405367c..c0e9cce3b 100644
--- a/libcef/browser/osr/render_widget_host_view_osr.h
+++ b/libcef/browser/osr/render_widget_host_view_osr.h
@@ -315,6 +315,7 @@ class CefRenderWidgetHostViewOSR
 #endif  // defined(OS_MACOSX)
 
   void PlatformCreateCompositorWidget();
+  void PlatformResizeCompositorWidget(const gfx::Size& size);
   void PlatformDestroyCompositorWidget();
 
 #if defined(USE_AURA)
diff --git a/libcef/browser/osr/render_widget_host_view_osr_linux.cc b/libcef/browser/osr/render_widget_host_view_osr_linux.cc
index 444103a2a..d239e665d 100644
--- a/libcef/browser/osr/render_widget_host_view_osr_linux.cc
+++ b/libcef/browser/osr/render_widget_host_view_osr_linux.cc
@@ -123,6 +123,9 @@ void CefRenderWidgetHostViewOSR::PlatformCreateCompositorWidget() {
   compositor_widget_ = window_->xwindow();
 }
 
+void CefRenderWidgetHostViewOSR::PlatformResizeCompositorWidget(const gfx::Size&) {
+}
+
 void CefRenderWidgetHostViewOSR::PlatformDestroyCompositorWidget() {
   DCHECK(window_);
   window_->Close();
diff --git a/libcef/browser/osr/render_widget_host_view_osr_mac.mm b/libcef/browser/osr/render_widget_host_view_osr_mac.mm
index 9188ddb4b..a99b57fed 100644
--- a/libcef/browser/osr/render_widget_host_view_osr_mac.mm
+++ b/libcef/browser/osr/render_widget_host_view_osr_mac.mm
@@ -318,6 +318,9 @@ void CefRenderWidgetHostViewOSR::PlatformCreateCompositorWidget() {
   browser_compositor_->Unsuspend();
 }
 
+void CefRenderWidgetHostViewOSR::PlatformResizeCompositorWidget(const gfx::Size&) {
+}
+
 void CefRenderWidgetHostViewOSR::PlatformDestroyCompositorWidget() {
   DCHECK(window_);
 
diff --git a/libcef/browser/osr/render_widget_host_view_osr_win.cc b/libcef/browser/osr/render_widget_host_view_osr_win.cc
index f63385065..b38056854 100644
--- a/libcef/browser/osr/render_widget_host_view_osr_win.cc
+++ b/libcef/browser/osr/render_widget_host_view_osr_win.cc
@@ -149,6 +149,12 @@ void CefRenderWidgetHostViewOSR::PlatformCreateCompositorWidget() {
   compositor_widget_ = window_->hwnd();
 }
 
+void CefRenderWidgetHostViewOSR::PlatformResizeCompositorWidget(const gfx::Size& size) {
+  DCHECK(window_);
+  SetWindowPos(window_->hwnd(), NULL, 0, 0, size.width(), size.height(),
+               SWP_NOMOVE | SWP_NOZORDER | SWP_NOREDRAW);
+}
+
 void CefRenderWidgetHostViewOSR::PlatformDestroyCompositorWidget() {
   window_.reset(NULL);
   compositor_widget_ = gfx::kNullAcceleratedWidget;