compositor: Enable partial raster by default.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index befedc87557302ba6be25c02f188e35453691da7..c59c4d0624fce2a4c56e81826ba282cc40809213 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -223,6 +223,10 @@ const char kDisableNativeGpuMemoryBuffers[] =
 // Disables the Web Notification and the Push APIs.
 const char kDisableNotifications[]          = "disable-notifications";
 
+// Disable partial raster in renderer. Disabling this switch also disables
+// the use of persistent gpu memory buffers.
+const char kDisablePartialRaster[] = "disable-partial-raster";
+
 // Disable Pepper3D.
 const char kDisablePepper3d[]               = "disable-pepper-3d";
 
@@ -407,10 +411,6 @@ const char kEnableNonValidatingReloadOnRefreshContent[] =
 const char kEnableNotificationActionIcons[] =
     "enable-notification-action-icons";
 
-// Enables partial raster. Enabling this switch also enables the use of
-// persistent gpu memory buffers.
-const char kEnablePartialRaster[] = "enable-partial-raster";
-
 // Enables compositor-accelerated touch-screen pinch gestures.
 const char kEnablePinch[]                   = "enable-pinch";