Remove the acclerated overflow scroll and fixed root background flags.

content/public/common/content_switches.h

Index: content/public/common/content_switches.h
diff --git a/content/public/common/content_switches.h b/content/public/common/content_switches.h
index cc87daa43c3294c21512dde29b55148bd6f82183..0926c6e75a94c2ff4034403fbc818fa1a4d4bd0c 100644
--- a/content/public/common/content_switches.h
+++ b/content/public/common/content_switches.h
@@ -33,8 +33,6 @@ CONTENT_EXPORT extern const char kDefaultTileHeight[];
 CONTENT_EXPORT extern const char kDisable2dCanvasAntialiasing[];
 CONTENT_EXPORT extern const char kDisable3DAPIs[];
 CONTENT_EXPORT extern const char kDisableAccelerated2dCanvas[];
-CONTENT_EXPORT extern const char kDisableAcceleratedFixedRootBackground[];
-CONTENT_EXPORT extern const char kDisableAcceleratedOverflowScroll[];
 CONTENT_EXPORT extern const char kDisableLayerSquashing[];
 CONTENT_EXPORT extern const char kDisableAcceleratedVideoDecode[];
 CONTENT_EXPORT extern const char kDisableApplicationCache[];
@@ -89,8 +87,6 @@ CONTENT_EXPORT extern const char kDisableZeroCopy[];
 CONTENT_EXPORT extern const char kDomAutomationController[];
 CONTENT_EXPORT extern const char kEnableBleedingEdgeRenderingFastPaths[];
 CONTENT_EXPORT extern const char kDisableDeferredFilters[];
-CONTENT_EXPORT extern const char kEnableAcceleratedFixedRootBackground[];
-CONTENT_EXPORT extern const char kEnableAcceleratedOverflowScroll[];
 CONTENT_EXPORT extern const char kEnableLayerSquashing[];
 CONTENT_EXPORT extern const char kEnableContainerCulling[];
 CONTENT_EXPORT extern const char kEnableBeginFrameScheduling[];