Add Web preferences for GL_RGB support

content/browser/gpu/gpu_data_manager_impl_private.cc

Index: content/browser/gpu/gpu_data_manager_impl_private.cc
diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
index 87bad092436686a2441dc44e01ce04e6d02ff3c9..009d8645b8bdbb4526a560fffc7144dbb59de1ca 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.cc
+++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
@@ -739,6 +739,9 @@ void GpuDataManagerImplPrivate::UpdateRendererWebPrefs(
        display_count_ > 1))
     prefs->gl_multisampling_enabled = false;
 
+  if (IsDriverBugWorkaroundActive(gpu::DISABLE_GL_RGB_FORMAT))
+    prefs->gl_rgb_support_enabled = false;
+
 #if defined(USE_AURA)
   if (!CanUseGpuBrowserCompositor()) {
     prefs->accelerated_2d_canvas_enabled = false;