Pass the correct have_context to GLES2Decoder::Destroy in the GPU fuzzer

ResetDecoder would always pass a true have_context to GLES2Decoder::Destroy
causing some assertions in the destuction of GL objects when the context
had previously been lost.

BUG=877524

Change-Id: I8b455ba0aa9515764d5caca63668401b09cb124e
Reviewed-on: https://chromium-review.googlesource.com/c/1344212Reviewed-by: Antoine Labour <piman@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609763}

gpu/command_buffer/tests/fuzzer_main.cc

@@ -403,9 +403,11 @@ class CommandBufferSetup {
     if (translator)
       translator->AddRef();
 #endif
-    decoder_->Destroy(true);
+    bool context_lost =
+        decoder_->WasContextLost() || !decoder_->CheckResetStatus();
+    decoder_->Destroy(!context_lost);
     decoder_.reset();
-    if (recreate_context_) {
+    if (recreate_context_ || context_lost) {
       context_->ReleaseCurrent(nullptr);
       context_ = nullptr;
     }