Route selection bounds updates through the compositor

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 0770a14b29967b08247e43848b050041350a0898..127564dd8d4ba7228ed0de984ffe4b5a57a7b129 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -105,6 +105,10 @@ const char kDisableApplicationCache[]       = "disable-application-cache";
 // users with many windows/tabs and lots of memory.
 const char kDisableBackingStoreLimit[]      = "disable-backing-store-limit";
 
+// See comment for kDisableCompositedSelectionUpdates.
+const char kDisableCompositedSelectionUpdates[] =
+    "disable-composited-selection-updates";
+
 // See comment for kEnableCompositingForFixedPosition.
 const char kDisableCompositingForFixedPosition[] =
      "disable-fixed-position-compositing";
@@ -340,6 +344,11 @@ const char kEnableContainerCulling[]        = "enable-container-culling";
 // Use a BeginFrame signal from browser to renderer to schedule rendering.
 const char kEnableBeginFrameScheduling[]    = "enable-begin-frame-scheduling";
 
+// Enable/Disable use of the compositor to transform and communicate selection
+// bound updates to the browser.
+const char kEnableCompositedSelectionUpdates[] =
+    "enable-composited-selection-updates";
+
 // Enable the creation of compositing layers for fixed position
 // elements. Three options are needed to support four possible scenarios:
 //  1. Default (disabled)