Reverting changes that made window.scroll properties relative to the layout viewport.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 73a9ea8eec4c692a409dc668db64cc96efc806ae..b967f10de5bb2529129432c34c11b0d0291096c2 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5318,6 +5318,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_IGNORE_GPU_BLACKLIST_DESCRIPTION" desc="Description of the 'Ignore GPU blacklist' lab.">
         Overrides the built-in software rendering list and enables GPU-acceleration on unsupported system configurations.
       </message>
+      <message name="IDS_FLAGS_INERT_VISUAL_VIEWPORT_NAME" desc="Title of the flag to enable the inert visual viewport experiment.">
+        Inert visual viewport.
+      </message>
+      <message name="IDS_FLAGS_INERT_VISUAL_VIEWPORT_DESCRIPTION" desc="Description of the flag to enable the inert visual viewport experiment.">
+        Experiment to have all APIs reflect the layout viewport. This will make window.scroll properties relative to the layout viewport.
+      </message>
       <message name="IDS_FLAGS_THREADED_COMPOSITING_MODE_NAME" desc="Name of the 'Threaded compositing mode' lab.">
         Threaded compositing
       </message>