Add a command line flag (--enable-fixed-position-compositing) for enabling compositing

content/public/common/content_switches.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Defines all the "content" command-line switches.
 
 #ifndef CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 #define CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 #pragma once
 
@@ skipping 49 matching lines @@
 extern const char kDisableSessionStorage[];
 extern const char kDisableSharedWorkers[];
 CONTENT_EXPORT extern const char kDisableSpeechInput[];
 extern const char kDisableSpellcheckAPI[];
 CONTENT_EXPORT extern const char kDisableWebAudio[];
 extern const char kDisableWebSockets[];
 extern const char kEnableAccelerated2dCanvas[];
 CONTENT_EXPORT extern const char kEnableAcceleratedDrawing[];
 extern const char kEnableAccessibility[];
 extern const char kEnableAccessibilityLogging[];
+CONTENT_EXPORT extern const char kEnableCompositingForFixedPosition[];
 CONTENT_EXPORT extern const char kEnableDNSCertProvenanceChecking[];
 CONTENT_EXPORT extern const char kEnableDeviceMotion[];
 CONTENT_EXPORT extern const char kDisableFullScreen[];
 extern const char kEnableGPUPlugin[];
 CONTENT_EXPORT extern const char kEnableLogging[];
 extern const char kEnableMediaStream[];
 extern const char kEnableMonitorProfile[];
 extern const char kEnableOriginBoundCerts[];
 extern const char kEnablePreparsedJsCaching[];
 extern const char kEnablePrivilegedWebGLExtensions[];
@@ skipping 86 matching lines @@
 extern const char kUseSystemSSL[];
 #endif
 
 #if !defined(OFFICIAL_BUILD)
 CONTENT_EXPORT extern const char kRendererCheckFalseTest[];
 #endif
 
 }  // namespace switches
 
 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_