Use ZoomValuesEqual() instead of ==.

components/ui/zoom/zoom_controller.cc

Index: components/ui/zoom/zoom_controller.cc
diff --git a/components/ui/zoom/zoom_controller.cc b/components/ui/zoom/zoom_controller.cc
index 51dbf021b716bf7df6bf1be01ffa02926f28eb11..964d20f7cff99b45c1eec0fb7bee5cb0174c4fdc 100644
--- a/components/ui/zoom/zoom_controller.cc
+++ b/components/ui/zoom/zoom_controller.cc
@@ -96,7 +96,7 @@ bool ZoomController::SetZoomLevelByClient(
   // Do not actually rescale the page in manual mode.
   if (zoom_mode_ == ZOOM_MODE_MANUAL) {
     // If the zoom level hasn't changed, early out to avoid sending an event.
-    if (zoom_level_ == zoom_level)
+    if (content::ZoomValuesEqual(zoom_level_, zoom_level))
       return true;
 
     double old_zoom_level = zoom_level_;