Dejank: also animate window moves due to requested size changes.

This performance an animation when, for example, a dialog window is
moved because the size of its content has changed.

Change-Id: I2d79a1a57f94e0f2f8ef706a473fca6c9cc637cf

Author: Dianne Hackborn

services/java/com/android/server/wm/WindowState.java

@@ -100,6 +100,8 @@ final class WindowState implements WindowManagerPolicy.WindowState,
      */
     int mRequestedWidth;
     int mRequestedHeight;
+    int mLastRequestedWidth;
+    int mLastRequestedHeight;
 
     int mLayer;
     int mAnimLayer;
@@ -391,6 +393,8 @@ final class WindowState implements WindowManagerPolicy.WindowState,
         mSurface = null;
         mRequestedWidth = 0;
         mRequestedHeight = 0;
+        mLastRequestedWidth = 0;
+        mLastRequestedHeight = 0;
         mXOffset = 0;
         mYOffset = 0;
         mLayer = 0;
@@ -458,6 +462,11 @@ public void computeFrameLw(Rect pf, Rect df, Rect cf, Rect vf) {
             mParentFrame.set(pf);
             mContentChanged = true;
         }
+        if (mRequestedWidth != mLastRequestedWidth || mRequestedHeight != mLastRequestedHeight) {
+            mLastRequestedWidth = mRequestedWidth;
+            mLastRequestedHeight = mRequestedHeight;
+            mContentChanged = true;
+        }
 
         final Rect content = mContentFrame;
         content.set(cf);
@@ -1701,6 +1710,10 @@ void dump(PrintWriter pw, String prefix, boolean dumpAll) {
         pw.print(prefix); pw.print("Requested w="); pw.print(mRequestedWidth);
                 pw.print(" h="); pw.print(mRequestedHeight);
                 pw.print(" mLayoutSeq="); pw.println(mLayoutSeq);
+        if (mRequestedWidth != mLastRequestedWidth || mRequestedHeight != mLastRequestedHeight) {
+            pw.print(prefix); pw.print("LastRequested w="); pw.print(mLastRequestedWidth);
+                    pw.print(" h="); pw.println(mLastRequestedHeight);
+        }
         if (mAttachedWindow != null || mLayoutAttached) {
             pw.print(prefix); pw.print("mAttachedWindow="); pw.print(mAttachedWindow);
                     pw.print(" mLayoutAttached="); pw.println(mLayoutAttached);