Need to release the GL context.

ui/gfx/compositor/compositor_cc.cc

Index: ui/gfx/compositor/compositor_cc.cc
diff --git a/ui/gfx/compositor/compositor_cc.cc b/ui/gfx/compositor/compositor_cc.cc
index 3e789c572d3464108d6c1c2a5739fc03be9fcbe7..490cf391252f7feecaf9efd8065865cb694bee79 100644
--- a/ui/gfx/compositor/compositor_cc.cc
+++ b/ui/gfx/compositor/compositor_cc.cc
@@ -239,7 +239,9 @@ WebKit::WebGraphicsContext3D* CompositorCC::createContext3D() {
   CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (!command_line->HasSwitch(switches::kDisableUIVsync)) {
     context->makeContextCurrent();
-    gfx::GLContext::GetCurrent()->SetSwapInterval(1);
+    gfx::GLContext* gl_context = gfx::GLContext::GetCurrent();
+    gl_context->SetSwapInterval(1);
+    gl_context->ReleaseCurrent(NULL);
   }
 
   return context;