Remove the --disable-begin-frame-scheduling flag

cc/base/switches.cc

Index: cc/base/switches.cc
diff --git a/cc/base/switches.cc b/cc/base/switches.cc
index 7de98ffcab55f3a1dde549091bc6cc881dba9130..e7b6ac9b1ba2dcd39273ec8b18bcbf49508de393 100644
--- a/cc/base/switches.cc
+++ b/cc/base/switches.cc
@@ -44,9 +44,6 @@ const char kSlowDownRasterScaleFactor[] = "slow-down-raster-scale-factor";
 // Compress tile textures for GPUs supporting it.
 const char kEnableTileCompression[] = "enable-tile-compression";
 
-// Disable the BeginFrame signal from browser to renderer to schedule rendering.
-const char kDisableBeginFrameScheduling[] = "disable-begin-frame-scheduling";
-
 // Enables the GPU benchmarking extension
 const char kEnableGpuBenchmarking[] = "enable-gpu-benchmarking";