Re-center opt in dialog upon launching.

Re-center opt in dialog upon launching when no resizing is needed.

Bug: b/132199704
Change-Id: I2cbfd157c7b1be2428e3f76e82b8f389aa7a6976
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1752173Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Long Cheng <lgcheng@google.com>
Cr-Commit-Position: refs/heads/master@{#686522}

chrome/browser/resources/chromeos/arc_support/background.js

@@ -972,10 +972,6 @@ function setWindowBounds() {
   if (outerHeight > screen.availHeight) {
     outerHeight = screen.availHeight;
   }
-  if (appWindow.outerBounds.width == outerWidth &&
-      appWindow.outerBounds.height == outerHeight) {
-    return;
-  }
 
   appWindow.outerBounds.width = outerWidth;
   appWindow.outerBounds.height = outerHeight;