Remove redundant codepath for webgl api blocking

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index c16a63968238191fc66a1ee016bd165350eb6e6c..de21595224043f4fcb9b25cd6a96c70c070c0be4 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -494,7 +494,11 @@ GpuProcessHost::~GpuProcessHost() {
         // Don't block offscreen contexts (and force page reload for webgl)
         // if this was an intentional shutdown or the OOM killer on Android
         // killed us while Chrome was in the background.
+// TODO(crbug.com/598400): Restrict this to Android for now, since other
+// platforms might fall through here for the 'exit_on_context_lost' workaround.
+#if defined(OS_ANDROID)
         block_offscreen_contexts = false;
+#endif
         message = "The GPU process exited normally. Everything is okay.";
         break;
       case base::TERMINATION_STATUS_ABNORMAL_TERMINATION: