chore: cherry-pick 54454ec7fbcb from chromium

patches/chromium/.patches

@@ -100,3 +100,4 @@ move_readablestream_requests_onto_the_stack_before_iteration.patch
 streams_convert_state_dchecks_to_checks.patch
 audiocontext_haspendingactivity_unless_it_s_closed.patch
 protect_automatic_pull_handlers_with_mutex.patch
+cherry-pick-54454ec7fbcb.patch

patches/chromium/cherry-pick-54454ec7fbcb.patch

@@ -0,0 +1,30 @@
+From 54454ec7fbcbd043f7eafea03049e53ccec5e04f Mon Sep 17 00:00:00 2001
+From: David Manouchehri <david@davidmanouchehri.com>
+Date: Wed, 19 Feb 2020 00:29:19 +0000
+Subject: [PATCH] Verify if the context is still available.
+
+Bug: 1051748
+Change-Id: I6bbef3ef50930048984593270fbe39a59a6d61f3
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2053167
+Reviewed-by: Shrek Shao <shrekshao@google.com>
+Reviewed-by: Kenneth Russell <kbr@chromium.org>
+Commit-Queue: Kenneth Russell <kbr@chromium.org>
+Auto-Submit: David Manouchehri <david@davidmanouchehri.com>
+Cr-Commit-Position: refs/heads/master@{#742401}
+---
+ .../renderer/modules/webgl/webgl_rendering_context_base.cc      | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc b/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+index 270d3c99e8d15..e6b812db1f52d 100644
+--- a/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
++++ b/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc
+@@ -7606,7 +7606,7 @@ void WebGLRenderingContextBase::PrintGLErrorToConsole(const String& message) {
+
+ void WebGLRenderingContextBase::PrintWarningToConsole(const String& message) {
+   blink::ExecutionContext* context = Host()->GetTopExecutionContext();
+-  if (context) {
++  if (context && !context->IsContextDestroyed()) {
+     context->AddConsoleMessage(MakeGarbageCollected<ConsoleMessage>(
+         mojom::ConsoleMessageSource::kRendering,
+         mojom::ConsoleMessageLevel::kWarning, message));