Removing GL context rate limiting feature and related wrappers

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 75828bf5d18724239f34ddd5b7dc559caea025cc..fe475a0edf051f0c2d5874234acd0f389306d840 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -1005,16 +1005,6 @@ void RenderWidgetCompositor::RecordFrameTimingEvents(
   }
 }
 
-void RenderWidgetCompositor::RateLimitSharedMainThreadContext() {
-  cc::ContextProvider* provider =
-      compositor_deps_->GetSharedMainThreadContextProvider();
-  // provider can be NULL after the GPU process crashed enough times and we
-  // don't want to restart it any more (falling back to software).
-  if (!provider)
-    return;
-  provider->ContextGL()->RateLimitOffscreenContextCHROMIUM();
-}
-
 void RenderWidgetCompositor::SetSurfaceIdNamespace(
     uint32_t surface_id_namespace) {
   layer_tree_host_->set_surface_id_namespace(surface_id_namespace);