Improve CPU usage by ignoring ScheduleAnimation() and ScheduleComposite() calls when not using accelerated compositing (issue #456).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@420 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/webwidget_host.cc

@@ -15,6 +15,9 @@ using WebKit::WebSize;
 
 
 void WebWidgetHost::ScheduleAnimation() {
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
+    return;
+
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       base::Bind(&WebWidgetHost::ScheduleComposite, weak_factory_.GetWeakPtr()),
       10);

libcef/webwidget_host_gtk.cc

@@ -303,6 +303,9 @@ void WebWidgetHost::DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect) {
 }
 
 void WebWidgetHost::ScheduleComposite() {
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
+    return;
+
   int width = logical_size_.width();
   int height = logical_size_.height();
   GdkRectangle grect = {

libcef/webwidget_host_mac.mm

@@ -228,6 +228,9 @@ void WebWidgetHost::Paint(SkRegion& update_rgn) {
 }
 
 void WebWidgetHost::ScheduleComposite() {
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
+    return;
+
   [view_ setNeedsDisplay:YES];
 }
 

libcef/webwidget_host_win.cc

@@ -309,8 +309,9 @@ void WebWidgetHost::DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect) {
 }
 
 void WebWidgetHost::ScheduleComposite() {
-  if (!webwidget_)
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
     return;
+
   WebSize size = webwidget_->size();
   InvalidateRect(gfx::Rect(0, 0, size.width, size.height));
 }