Avoid redundant checks for Compositing reasons in RenderLayerCompositor

https://bugs.webkit.org/show_bug.cgi?id=118114

Patch by Sanjoy Pal <sanjoy.pal@samsung.com> on 2013-06-26
Reviewed by Anders Carlsson.

A RenderObject can be any one of the Video, Canvas, Plugin or Iframe.
Hence removing the redundant checks.

No new tests as no functionality change.

* rendering/RenderLayerCompositor.cpp:
(WebCore::RenderLayerCompositor::reasonsForCompositing):

Canonical link: https://commits.webkit.org/136157@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@152078 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/ChangeLog

@@ -1,3 +1,18 @@
+2013-06-26  Sanjoy Pal  <sanjoy.pal@samsung.com>
+
+        Avoid redundant checks for Compositing reasons in RenderLayerCompositor
+        https://bugs.webkit.org/show_bug.cgi?id=118114
+
+        Reviewed by Anders Carlsson.
+
+        A RenderObject can be any one of the Video, Canvas, Plugin or Iframe.
+        Hence removing the redundant checks.
+
+        No new tests as no functionality change.
+
+        * rendering/RenderLayerCompositor.cpp:
+        (WebCore::RenderLayerCompositor::reasonsForCompositing):
+
 2013-06-26  Gwang Yoon Hwang  <ryumiel@company100.net>
 
         Coordinated Graphics: Separate CoordinatedLayerTreeHost into CoordinatedLayerTreeHost and CompositingCoordinator

Source/WebCore/rendering/RenderLayerCompositor.cpp

@@ -1841,14 +1841,11 @@ CompositingReasons RenderLayerCompositor::reasonsForCompositing(const RenderLaye
 
     if (requiresCompositingForVideo(renderer))
         reasons |= CompositingReasonVideo;
-
-    if (requiresCompositingForCanvas(renderer))
+    else if (requiresCompositingForCanvas(renderer))
         reasons |= CompositingReasonCanvas;
-
-    if (requiresCompositingForPlugin(renderer))
+    else if (requiresCompositingForPlugin(renderer))
         reasons |= CompositingReasonPlugin;
-
-    if (requiresCompositingForFrame(renderer))
+    else if (requiresCompositingForFrame(renderer))
         reasons |= CompositingReasonIFrame;
 
     if ((canRender3DTransforms() && renderer->style()->backfaceVisibility() == BackfaceVisibilityHidden))