Move surface resize platform code from GpuProcessHostUIShim to RenderWidgetHostView implementations.

content/browser/renderer_host/render_widget_host_view_gtk.cc

Index: content/browser/renderer_host/render_widget_host_view_gtk.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_gtk.cc b/content/browser/renderer_host/render_widget_host_view_gtk.cc
index 9c05bca69e176e9abf7d9349c8192c587a3fb51b..0fbc8b1d6ed6926b3e2f629d5ca0304ae182f59e 100644
--- a/content/browser/renderer_host/render_widget_host_view_gtk.cc
+++ b/content/browser/renderer_host/render_widget_host_view_gtk.cc
@@ -1294,6 +1294,18 @@ gfx::GLSurfaceHandle RenderWidgetHostViewGtk::GetCompositingSurface() {
   return gfx::GLSurfaceHandle(compositing_surface_, gfx::NATIVE_TRANSPORT);
 }
 
+void RenderWidgetHostViewGtk::ResizeCompositingSurface(const gfx::Size& size) {
+  gfx::GLSurfaceHandle surface = GetCompositingSurface();
+
+  GdkWindow* window = reinterpret_cast<GdkWindow*>(
+      gdk_xid_table_lookup(surface.handle));

[piman, 2013/10/03 00:17:29]

This can probably be simplified now, by getting the GdkWindow directly from the
GtkWidget

+  if (window) {
+    Display* display = GDK_WINDOW_XDISPLAY(window);
+    gdk_window_resize(window, size.width(), size.height());
+    XSync(display, False);
+  }
+}
+
 bool RenderWidgetHostViewGtk::LockMouse() {
   if (mouse_locked_)
     return true;