cc: Invalidate the full tiled layer when contents scale changes.

cc/tiled_layer.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/tiled_layer.h"
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "cc/layer_impl.h"
 #include "cc/layer_tree_host.h"
@@ skipping 615 matching lines @@
         bound.Intersect(gfx::Rect(gfx::Point(), contentBounds()));
         m_predictedVisibleRect.Intersect(bound);
     }
     m_previousContentBounds = contentBounds();
     m_previousVisibleRect = visibleContentRect();
 }
 
 void TiledLayer::update(ResourceUpdateQueue& queue, const OcclusionTracker* occlusion, RenderingStats& stats)
 {
     DCHECK(!m_skipsDraw && !m_failedUpdate); // Did resetUpdateState get skipped?
+
+    ContentsScalingLayer::update(queue, occlusion, stats);

[enne (OOO), 2012/12/19 23:57:24]

You should do this in ScrollbarLayer too (but not PictureLayer).

+
     updateBounds();
     if (m_tiler->hasEmptyBounds() || !drawsContent())
         return;
 
     bool didPaint = false;
 
     // Animation pre-paint. If the layer is small, try to paint it all
     // immediately whether or not it is occluded, to avoid paint/upload
     // hiccups while it is animating.
     if (isSmallAnimatedLayer()) {
@@ skipping 111 matching lines @@
     gfx::Rect prepaintRect = visibleContentRect();
     prepaintRect.Inset(-m_tiler->tileSize().width() * prepaintColumns,
                        -m_tiler->tileSize().height() * prepaintRows);
     gfx::Rect contentRect(gfx::Point(), contentBounds());
     prepaintRect.Intersect(contentRect);
 
     return prepaintRect;
 }
 
 }  // namespace cc