Change default force composite setting to true

Source/core/inspector/InspectorOverlay.cpp

Index: Source/core/inspector/InspectorOverlay.cpp
diff --git a/Source/core/inspector/InspectorOverlay.cpp b/Source/core/inspector/InspectorOverlay.cpp
index 419167e8b53792c9f94817315636b2c83b838c82..e025608cce817ade1ffbf9af9044aee2e2caf6a5 100644
--- a/Source/core/inspector/InspectorOverlay.cpp
+++ b/Source/core/inspector/InspectorOverlay.cpp
@@ -707,6 +707,10 @@ Page* InspectorOverlay::overlayPage()
     overlaySettings.setScriptEnabled(true);
     overlaySettings.setPluginsEnabled(false);
     overlaySettings.setLoadsImagesAutomatically(true);
+    // FIXME: http://crbug.com/363843. Inspector should probably create its
+    // own graphics layers and attach them to the tree rather than going
+    // through some non-composited paint function.
+    overlaySettings.setAcceleratedCompositingEnabled(false);
 
     RefPtr<LocalFrame> frame = LocalFrame::create(dummyFrameLoaderClient, &m_overlayPage->frameHost(), 0);
     frame->setView(FrameView::create(frame.get()));