Workaround for Intel 6xxx clear to 0/1 bug

ui/gl/gl_context.cc

Index: ui/gl/gl_context.cc
diff --git a/ui/gl/gl_context.cc b/ui/gl/gl_context.cc
index 0f3b3561390189453f9c746bfb31a7a43f564546..4fe612a2fb8b835e1ec948d435e972081a6b78cb 100644
--- a/ui/gl/gl_context.cc
+++ b/ui/gl/gl_context.cc
@@ -44,6 +44,18 @@ void GLContext::ScopedReleaseCurrent::Cancel() {
   canceled_ = true;
 }
 
+GLWorkarounds GLContext::gl_workarounds_;
+
+// static
+void GLContext::SetGLWorkarounds(const GLWorkarounds& workarounds) {
+  gl_workarounds_ = workarounds;
+}
+
+// static
+GLWorkarounds GLContext::GetGLWorkarounds() {
+  return gl_workarounds_;
+}
+
 GLContext::GLContext(GLShareGroup* share_group) : share_group_(share_group) {
   if (!share_group_.get())
     share_group_ = new gl::GLShareGroup();