Remove the is_loading_ field from WebContentsImpl

content/browser/frame_host/frame_tree_node.cc

Index: content/browser/frame_host/frame_tree_node.cc
diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
index 398ac8680b851728dd817520444a9b0af23e0a4a..e7e58236e9f2c79ae9dc6670d83784847aae0fad 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -405,4 +405,26 @@ void FrameTreeNode::DidFocus() {
   FOR_EACH_OBSERVER(Observer, observers_, OnFrameTreeNodeFocused(this));
 }
 
+void FrameTreeNode::BeforeUnloadCanceled() {
+  if (!IsMainFrame())
+    return;
+
+  RenderFrameHostImpl* current_frame_host =
+      render_manager_.current_frame_host();
+  DCHECK(current_frame_host);
+  current_frame_host->ResetLoadingState();
+
+  if (IsBrowserSideNavigationEnabled()) {
+    RenderFrameHostImpl* speculative_frame_host =
+        render_manager_.speculative_frame_host();
+    if (speculative_frame_host)
+      speculative_frame_host->ResetLoadingState();
+  } else {
+    RenderFrameHostImpl* pending_frame_host =
+        render_manager_.pending_frame_host();
+    if (pending_frame_host)
+      pending_frame_host->ResetLoadingState();
+  }
+}
+
 }  // namespace content