Apply setInterval to new surface-context pairs

gpu/command_buffer/service/gpu_scheduler.cc

Index: gpu/command_buffer/service/gpu_scheduler.cc
diff --git a/gpu/command_buffer/service/gpu_scheduler.cc b/gpu/command_buffer/service/gpu_scheduler.cc
index d8a047c598c3dc99ae95df2ef8eecc757d79854a..4c547738e0f3434cd74285338e25771213e39faa 100644
--- a/gpu/command_buffer/service/gpu_scheduler.cc
+++ b/gpu/command_buffer/service/gpu_scheduler.cc
@@ -5,12 +5,14 @@
 #include "gpu/command_buffer/service/gpu_scheduler.h"
 
 #include "base/callback.h"
+#include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "ui/gfx/gl/gl_context.h"
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_surface.h"
+#include "ui/gfx/gl/gl_switches.h"
 
 using ::base::SharedMemory;
 
@@ -66,6 +68,16 @@ bool GpuScheduler::InitializeCommon(
   if (!context->MakeCurrent(surface))
     return false;
 
+#if !defined(OS_MACOSX)
+  // Set up swap interval for onscreen contexts.
+  if (!surface->IsOffscreen()) {
+    if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisableGpuVsync))
+      context->SetSwapInterval(0);
+    else
+      context->SetSwapInterval(1);
+  }
+#endif
+
   // Do not limit to a certain number of commands before scheduling another
   // update when rendering onscreen.
   if (!surface->IsOffscreen())