Aura: Browser-side changes for Composite-To-Mailbox

cc/switches.cc

Index: cc/switches.cc
diff --git a/cc/switches.cc b/cc/switches.cc
index cba392de210d53dfe59a4d6e25d6d4e15fe6f0dd..572f2c83a99bd90b8da808d76b0a4bc087e9beac 100644
--- a/cc/switches.cc
+++ b/cc/switches.cc
@@ -60,5 +60,9 @@ const char kShowNonOccludingRects[] = "show-nonoccluding-rects";
 // of pixels culled, and the number of pixels drawn, for each frame.
 const char kTraceOverdraw[] = "trace-overdraw";
 
+// Causes the compositor to render to textures which are then sent to the parent
+// through the texture mailbox mechanism. Requires kEnableCompositorFrameMessage.
+const char kCompositeToMailbox[] = "composite-to-mailbox";
+
 }  // namespace switches
 }  // namespace cc