Mark layers that can use LCD text based on layer transform and opacity.

cc/tiled_layer_unittest.cc

Index: cc/tiled_layer_unittest.cc
diff --git a/cc/tiled_layer_unittest.cc b/cc/tiled_layer_unittest.cc
index e0942f2d3c0c21c30cdaf1c895ad76465aec7076..058c35b0f639738e6b0b8b31cdad03e074ac6030 100644
--- a/cc/tiled_layer_unittest.cc
+++ b/cc/tiled_layer_unittest.cc
@@ -1427,8 +1427,8 @@ TEST_F(TiledLayerTest, dontAllocateContentsWhenTargetSurfaceCantBeAllocated)
     {
         updateTextures();
         EXPECT_EQ(6, root->fakeLayerUpdater()->updateCount());
-        EXPECT_EQ(3, child->fakeLayerUpdater()->updateCount());
-        EXPECT_EQ(3, child2->fakeLayerUpdater()->updateCount());
+        EXPECT_EQ(4, child->fakeLayerUpdater()->updateCount());

[danakj, 2012/11/07 18:15:00]

Why did this happen?

[alokp, 2012/11/08 22:34:07]

Because now we call setCanUseLCDText during updateLayers, which in turn might
reset tile textures and hence change the update count. I also noticed that there
were more unit-test failures on Android because many tests assume
NoBorderTexels. In the new patch, I workaround this problem by overriding
setCanUseLCDText for FakeTiledLayer.

+        EXPECT_EQ(4, child2->fakeLayerUpdater()->updateCount());
         EXPECT_FALSE(m_queue->hasMoreUpdates());
 
         root->fakeLayerUpdater()->clearUpdateCount();