SurfaceView: Don't destroy Surface while Stopped.

We instead just want to leave it floating, and let
it's lifetime be controlled by the parent surface. This way it can
take part in animations. Normally the WindowManager handles this by
calling detachChildren but it seems sometimes stop arrives before
the window manager is even clued in. Rather than bringing ActivityManager
in to the detach children dance...this seemed more appropriate and very similar
to the behavior before SV->SurfaceControl port.

Bug: 37922210
Test: Manual from bug + Launch chrome a bunch
Change-Id: Iee4fb0078a6e8dfd4c7acdb0107f8edd3a995634

core/java/android/view/SurfaceView.java

@@ -678,9 +678,16 @@ public class SurfaceView extends View implements ViewRootImpl.WindowStoppedCallb
                 } finally {
                     mIsCreating = false;
                     if (mSurfaceControl != null && !mSurfaceCreated) {
-                        mSurfaceControl.destroy();
                         mSurface.release();
-                        mSurfaceControl = null;
+                        // If we are not in the stopped state, then the destruction of the Surface
+                        // represents a visual change we need to display, and we should go ahead
+                        // and destroy the SurfaceControl. However if we are in the stopped state,
+                        // we can just leave the Surface around so it can be a part of animations,
+                        // and we let the life-time be tied to the parent surface.
+                        if (!mWindowStopped) {
+                            mSurfaceControl.destroy();
+                            mSurfaceControl = null;
+                        }
                     }
                 }
             } catch (Exception ex) {