Don't call surfaceCreated for just changed surfaces

Fixes: 29223302

If the surface only changed we want to just call onSurfaceChanged,
not onSurfaceCreated.

Change-Id: I65c8b210a7e34eaa2862020335ee7f6ef56eeac2

core/java/android/view/ViewRootImpl.java

@@ -1938,7 +1938,7 @@ public final class ViewRootImpl implements ViewParent,
                 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight);
                 mSurfaceHolder.mSurfaceLock.unlock();
                 if (mSurface.isValid()) {
-                    if (!hadSurface || surfaceGenerationId != mSurface.getGenerationId()) {
+                    if (!hadSurface) {
                         mSurfaceHolder.ungetCallbacks();
 
                         mIsCreating = true;
@@ -1951,7 +1951,7 @@ public final class ViewRootImpl implements ViewParent,
                         }
                         surfaceChanged = true;
                     }
-                    if (surfaceChanged) {
+                    if (surfaceChanged || surfaceGenerationId != mSurface.getGenerationId()) {
                         mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder,
                                 lp.format, mWidth, mHeight);
                         SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks();