cc: Apply the layer's initial CSS scale to the contentsScale to render text at the right resolution.

cc/damage_tracker_unittest.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 "config.h"
 
 #include "CCDamageTracker.h"
 
 #include "CCGeometryTestUtils.h"
 #include "CCLayerImpl.h"
@@ skipping 16 matching lines @@
 {
     CCLayerSorter layerSorter;
     int dummyMaxTextureSize = 512;
 
     // Sanity check: The test itself should create the root layer's render surface, so
     //               that the surface (and its damage tracker) can persist across multiple
     //               calls to this function.
     ASSERT_TRUE(root->renderSurface());
     ASSERT_FALSE(renderSurfaceLayerList.size());
 
-    CCLayerTreeHostCommon::calculateDrawTransforms(root, root->bounds(), 1, &layerSorter, dummyMaxTextureSize, renderSurfaceLayerList);
+    CCLayerTreeHostCommon::calculateDrawTransforms(root, root->bounds(), 1, 1, &layerSorter, dummyMaxTextureSize, renderSurfaceLayerList);
 }
 
 void clearDamageForAllSurfaces(CCLayerImpl* layer)
 {
     if (layer->renderSurface())
         layer->renderSurface()->damageTracker()->didDrawDamagedArea();
 
     // Recursively clear damage for any existing surface.
     for (size_t i = 0; i < layer->children().size(); ++i)
         clearDamageForAllSurfaces(layer->children()[i]);
@@ skipping 1080 matching lines @@
     rootDamageRect = root->renderSurface()->damageTracker()->currentDamageRect();
     EXPECT_TRUE(rootDamageRect.isEmpty());
 
     // Damage should remain empty even after one frame, since there's yet no new damage
     emulateDrawingOneFrame(root.get());
     rootDamageRect = root->renderSurface()->damageTracker()->currentDamageRect();
     EXPECT_TRUE(rootDamageRect.isEmpty());
 }
 
 } // namespace