[DevTools] Do not reset page scale to 1.0, rely on setNeedsReset.

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 3450 matching lines @@
     return pageScaleConstraintsSet().finalConstraints().minimumScale;
 }
 
 float WebViewImpl::maximumPageScaleFactor() const
 {
     return pageScaleConstraintsSet().finalConstraints().maximumScale;
 }
 
 void WebViewImpl::resetScaleStateImmediately()
 {
-    page()->frameHost().visualViewport().setScale(1);
     pageScaleConstraintsSet().setNeedsReset(true);
 }
 
 void WebViewImpl::resetScrollAndScaleState()
 {
     page()->frameHost().visualViewport().reset();
 
     if (!page()->mainFrame()->isLocalFrame())
         return;
 
@@ skipping 1113 matching lines @@
 {
     // TODO(oshima): Investigate if this should return the ScreenInfo's scale factor rather than
     // page's scale factor, which can be 1 in use-zoom-for-dsf mode.
     if (!page())
         return 1;
 
     return page()->deviceScaleFactor();
 }
 
 } // namespace blink