Revert of Add gpu implementation of OverdrawXfermode

debugger/QT/SkDebuggerGUI.cpp

Index: debugger/QT/SkDebuggerGUI.cpp
diff --git a/debugger/QT/SkDebuggerGUI.cpp b/debugger/QT/SkDebuggerGUI.cpp
index 0c369f611357819b7229a6d335b72c83b4022f1b..0d009b3ffa57883df5b8609afe4b908e254b41c7 100644
--- a/debugger/QT/SkDebuggerGUI.cpp
+++ b/debugger/QT/SkDebuggerGUI.cpp
@@ -202,6 +202,7 @@
 void SkDebuggerGUI::actionRasterSettingsChanged() {
     fCanvasWidget.setWidgetVisibility(SkCanvasWidget::kRaster_8888_WidgetType,
                                       !fSettingsWidget.isRasterEnabled());
+    fDebugger.setOverdrawViz(fSettingsWidget.isOverdrawVizEnabled());
     this->updateImage();
 }
 
@@ -209,7 +210,6 @@
     fDebugger.setMegaViz(fSettingsWidget.isMegaVizEnabled());
     fDebugger.setPathOps(fSettingsWidget.isPathOpsEnabled());
     fDebugger.highlightCurrentCommand(fSettingsWidget.isVisibilityFilterEnabled());
-    fDebugger.setOverdrawViz(fSettingsWidget.isOverdrawVizEnabled());
     this->updateImage();
 }