Printing: Fix undefined behavior for near 0 scaling

components/printing/renderer/print_web_view_helper.h

Index: components/printing/renderer/print_web_view_helper.h
diff --git a/components/printing/renderer/print_web_view_helper.h b/components/printing/renderer/print_web_view_helper.h
index dd8d24d5b42458d47c615562d768d84f8d291e8f..03e222d60c80fbe6c1dbb4a58ab14eb1e3c822d3 100644
--- a/components/printing/renderer/print_web_view_helper.h
+++ b/components/printing/renderer/print_web_view_helper.h
@@ -112,6 +112,11 @@ class PrintWebViewHelper
                      std::unique_ptr<Delegate> delegate);
   ~PrintWebViewHelper() override;
 
+  // Minimum valid value for scaling. Since scaling is originally an integer
+  // representing a percentage, it should never be less than this if it is
+  // valid.
+  static constexpr double kEpsilon = 0.01f;
+
   // Disable print preview and switch to system dialog printing even if full
   // printing is build-in. This method is used by CEF.
   static void DisablePreview();