WIP - command line experiment

ui/compositor/compositor_switches.h

Index: ui/compositor/compositor_switches.h
diff --git a/ui/compositor/compositor_switches.h b/ui/compositor/compositor_switches.h
index 5b59477a948f3e46fd5a161b87d7a29bccc5059d..9e7ef91d6bb0803194a13cc4bacc4532e26d6cbe 100644
--- a/ui/compositor/compositor_switches.h
+++ b/ui/compositor/compositor_switches.h
@@ -7,6 +7,14 @@
 
 #include "ui/compositor/compositor_export.h"
 
+#ifdef ENABLE_FAST_COMMAND_LINE_SWITCHES
+
+namespace {
+#include "ui/compositor/compositor_switches.cc"
+}
+
+#else
+
 namespace switches {
 
 COMPOSITOR_EXPORT extern const char kDisableTestCompositor[];
@@ -18,4 +26,5 @@ COMPOSITOR_EXPORT extern const char kUIShowPaintRects[];
 
 }  // namespace switches
 
+#endif  // ENABLE_FAST_COMMAND_LINE_SWITCHES
 #endif  // UI_COMPOSITOR_COMPOSITOR_SWITCHES_H_