Enable hidpi on Linux, refactor a bit on Windows to share

content/public/common/content_switches.h

 // Copyright (c) 2012 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_
 
 #include "build/build_config.h"
@@ skipping 12 matching lines @@
 extern const char kAuditAllHandles[];
 extern const char kAuditHandles[];
 CONTENT_EXPORT extern const char kBlinkPlatformLogChannels[];
 CONTENT_EXPORT extern const char kBlockCrossSiteDocuments[];
 CONTENT_EXPORT extern const char kBrowserAssertTest[];
 CONTENT_EXPORT extern const char kBrowserCrashTest[];
 CONTENT_EXPORT extern const char kBrowserSubprocessPath[];
 extern const char kDebugPluginLoading[];
 CONTENT_EXPORT extern const char kDefaultTileWidth[];
 CONTENT_EXPORT extern const char kDefaultTileHeight[];
+CONTENT_EXPORT extern const char kDeviceScaleFactor[];
 CONTENT_EXPORT extern const char kDisable2dCanvasAntialiasing[];
 CONTENT_EXPORT extern const char kDisable3DAPIs[];
 CONTENT_EXPORT extern const char kDisableAccelerated2dCanvas[];
 CONTENT_EXPORT extern const char kDisableLayerSquashing[];
 CONTENT_EXPORT extern const char kDisableAcceleratedVideoDecode[];
 CONTENT_EXPORT extern const char kDisableApplicationCache[];
 extern const char kDisableBackingStoreLimit[];
 CONTENT_EXPORT extern const char kDisableBlinkScheduler[];
 CONTENT_EXPORT extern const char kDisablePreferCompositingToLCDText[];
 CONTENT_EXPORT extern const char kDisableCompositingForTransition[];
@@ skipping 233 matching lines @@
 #endif
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
 extern const char kDisableCoreAnimationPlugins[];
 extern const char kEnableThreadedEventHandlingMac[];
 #endif
 
 #if defined(OS_WIN)
 // This switch contains the device scale factor passed to certain processes
 // like renderers, etc.
-CONTENT_EXPORT extern const char kDeviceScaleFactor[];
 CONTENT_EXPORT extern const char kDisableLegacyIntermediateWindow[];
 // This switch will be removed when we enable the win32K lockdown process
 // mitigation.
 CONTENT_EXPORT extern const char kEnableWin32kRendererLockDown[];
 #endif
 
 #if defined(ENABLE_PLUGINS)
 CONTENT_EXPORT extern const char kEnablePluginPowerSaver[];
 #endif
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_