Do not restore browser controls positions for non-interactable tabs.

When switching tabs in the tab switcher, the new tab isn't interactable
until you leave the switcher.  Thus, we should ignore resetting the state
of the tab until we leave the switcher.

BUG=1040033

Change-Id: Ida4c27c00cd6b3bb6a6ae517555c2bcac30ac612
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2021286Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735245}

chrome/android/java/src/org/chromium/chrome/browser/fullscreen/ChromeFullscreenManager.java

@@ -360,7 +360,7 @@ public class ChromeFullscreenManager extends FullscreenManager
                 mBrowserVisibilityDelegate.showControlsTransient();
                 updateMultiTouchZoomSupport(!getPersistentFullscreenMode());
                 TabGestureStateListener.from(tab).setFullscreenManager(this);
-                restoreControlsPositions();
+                if (tab.isUserInteractable()) restoreControlsPositions();
             }
         }