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..e1b09b126e450e1a674f22fefa2e28eed9e66835 100644
--- a/ui/gl/gl_context.cc
+++ b/ui/gl/gl_context.cc
@@ -25,13 +25,25 @@
 namespace gl {
 
 namespace {
+
 base::LazyInstance<base::ThreadLocalPointer<GLContext>>::Leaky
     current_context_ = LAZY_INSTANCE_INITIALIZER;
 
 base::LazyInstance<base::ThreadLocalPointer<GLContext>>::Leaky
     current_real_context_ = LAZY_INSTANCE_INITIALIZER;
+
+GLWorkarounds gl_workarounds;

[Zhenyao Mo, 2017/06/20 21:34:17]

Sorry. What I mean is the gl_workarounds should be a member of the GLContext
class.

[jiajia.qin, 2017/06/21 02:47:22]

Done.

+
 }  // namespace
 
+void SetGLWorkarounds(const GLWorkarounds& workarounds) {
+  gl_workarounds = workarounds;
+}
+
+GLWorkarounds GetGLWorkarounds() {
+  return gl_workarounds;
+}
+
 GLContext::ScopedReleaseCurrent::ScopedReleaseCurrent() : canceled_(false) {}
 
 GLContext::ScopedReleaseCurrent::~ScopedReleaseCurrent() {