Revert of Move text/selection update to the back of pipeline (patchset #3...

Revert of Move text/selection update to the back of pipeline (patchset #3 id:40001 of https://codereview.chromium.org/2267933002/ )

Reason for revert:
Need to do more testing/thinking.

Original issue's description:
> Move text/selection update to the back of pipeline
>
> Instead of forcing the spurious rendering pipeline flush to get an updated selection and text input information (for IME), do after the layout and style information had updated.
>
> BUG=640310
>
> Committed: https://crrev.com/aa7d9e29b66032b9289769d2948c2b8a394ed4b0
> Cr-Commit-Position: refs/heads/master@{#415483}

TBR=chrishtr@chromium.org,esprehn@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=640310

Review-Url: https://codereview.chromium.org/2295013002
Cr-Commit-Position: refs/heads/master@{#415509}

content/renderer/render_widget.cc

@@ -830,13 +830,17 @@ void RenderWidget::RequestScheduleAnimation() {
 
 void RenderWidget::UpdateVisualState() {
   webwidget_->updateAllLifecyclePhases();
-  UpdateTextInputState(ShowIme::HIDE_IME, ChangeSource::FROM_NON_IME);
-  UpdateSelectionBounds();
 }
 
 void RenderWidget::WillBeginCompositorFrame() {
   TRACE_EVENT0("gpu", "RenderWidget::willBeginCompositorFrame");
 
+  // The UpdateTextInputState can result in further layout and possibly
+  // enable GPU acceleration so they need to be called before any painting
+  // is done.
+  UpdateTextInputState(ShowIme::HIDE_IME, ChangeSource::FROM_NON_IME);
+  UpdateSelectionBounds();
+
   FOR_EACH_OBSERVER(RenderFrameProxy, render_frame_proxies_,
                     WillBeginCompositorFrame());
 }