Make RenderViewImpl::OnForceRedraw more robust

content/test/layouttest_support.cc

Index: content/test/layouttest_support.cc
diff --git a/content/test/layouttest_support.cc b/content/test/layouttest_support.cc
index d1cfcca2c172fce980faaf6ef970b8c9673f2159..01d7e40887e2b5ac50b951ff9636b6d7d3c497cd 100644
--- a/content/test/layouttest_support.cc
+++ b/content/test/layouttest_support.cc
@@ -203,9 +203,10 @@ class CopyRequestSwapPromise : public cc::SwapPromise {
   void DidSwap(cc::CompositorFrameMetadata*) override {
     output_surface_from_commit_->RequestCopyOfOutput(std::move(copy_request_));
   }
-  void DidNotSwap(DidNotSwapReason r) override {
+  DidNotSwapAction DidNotSwap(DidNotSwapReason r) override {
     // The compositor should always swap in layout test mode.
     NOTREACHED() << "did not swap for reason " << r;
+    return DidNotSwapAction::BREAK_PROMISE;
   }
   int64_t TraceId() const override { return 0; }