From 844e1712df100e0a357d7f86b10cb78e6593b9fb Mon Sep 17 00:00:00 2001
From: Jorim Jaggi <jjaggi@google.com>
Date: Wed, 13 Jan 2016 17:39:25 -0800
Subject: [PATCH] Don't relayout when windows move during resize

Not needed and just increases system load.

Bug: 25015474
Change-Id: Iaf871389527237b5cbc88c03b2f060629b6351dc
---
 core/java/android/view/ViewRootImpl.java | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 633daad8a1ff5..90e9f1bd53996 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -3401,10 +3401,15 @@ public final class ViewRootImpl implements ViewParent,
 
                     mPendingBackDropFrame.set(mWinFrame);
 
-                    if (mView != null) {
-                        forceLayout(mView);
+                    // Suppress layouts during resizing - a correct layout will happen when resizing
+                    // is done, and this just increases system load.
+                    boolean suppress = mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER;
+                    if (!suppress) {
+                        if (mView != null) {
+                            forceLayout(mView);
+                        }
+                        requestLayout();
                     }
-                    requestLayout();
                 }
                 break;
             case MSG_WINDOW_FOCUS_CHANGED: {