Revert "Refactor to remove RenderWidget::PageScaleFactorChanged()."

This reverts commit 8bb6bea48d4131248455bfdb15a5cd9e841e8b0b.

Reason for revert:

Findit ( identified CL at revision 660506 as the
culprit for failures in the build cycles as shown on:

Sample Failed Build:

Sample Failed Step: content_browsertests

Sending to CQ since there were merge conflicts upon reverting

Original change's description:
> Refactor to remove RenderWidget::PageScaleFactorChanged().
> This refactor moves the logic in RenderWidget::PageScaleFactorChanged()
> to RenderWidget::SetPageScaleStateAndLimits(). This removes the need for
> RenderViewImpl::PageScaleFactorChanged() to call GetWidget().
> Bug: 924336
> Change-Id: Ia6a345f31b80fcfda9f9dcb0a2c2765aac7ff613
> Reviewed-on:
> Reviewed-by: Daniel Cheng <>
> Commit-Queue: James MacLean <>
> Cr-Commit-Position: refs/heads/master@{#660506},

Bug: 924336
Change-Id: Ic126ac8a219336fc60203c989230843225ac65b0
Commit-Queue: Collin Baker <>
Reviewed-by: Collin Baker <>
Cr-Commit-Position: refs/heads/master@{#660681}
11 files changed