Avoid recreating hardware_renderer_ if a draw occurs during cleanup.

android_webview/browser/browser_view_renderer.cc

Index: android_webview/browser/browser_view_renderer.cc
diff --git a/android_webview/browser/browser_view_renderer.cc b/android_webview/browser/browser_view_renderer.cc
index 0921acbef814ffee732bdac8f6fea707d7a62357..c53081505d10fae594486f9336a97243de958d51 100644
--- a/android_webview/browser/browser_view_renderer.cc
+++ b/android_webview/browser/browser_view_renderer.cc
@@ -120,6 +120,8 @@ void BrowserViewRenderer::SetCompositorFrameConsumer(
   }
   if (compositor_frame_consumer_) {
     compositor_frame_consumer_->DeleteHardwareRendererOnUI();
+    ReturnUnusedResource(
+        compositor_frame_consumer_->PassUncommittedFrameOnUI());
     ReturnResourceFromParent(compositor_frame_consumer_);
     compositor_frame_consumer_->SetCompositorFrameProducer(nullptr);
   }