Mark layers whether they can use LCD text depending on content-opacity, draw-opacity, and draw-tran…

cc/LayerChromium.cpp

Index: cc/LayerChromium.cpp
diff --git a/cc/LayerChromium.cpp b/cc/LayerChromium.cpp
index d271eb47e12de5470eba0e9a4957052450bee326..c3d399f2365ea47b4a024c2019ba6dd512da9b33 100644
--- a/cc/LayerChromium.cpp
+++ b/cc/LayerChromium.cpp
@@ -52,7 +52,7 @@ LayerChromium::LayerChromium()
     , m_masksToBounds(false)
     , m_contentsOpaque(false)
     , m_doubleSided(true)
-    , m_useLCDText(false)
+    , m_canUseLCDText(false)
     , m_preserves3D(false)
     , m_useParentBackfaceVisibility(false)
     , m_drawCheckerboardForMissingTiles(false)
@@ -84,9 +84,13 @@ LayerChromium::~LayerChromium()
     removeAllChildren();
 }
 
-void LayerChromium::setUseLCDText(bool useLCDText)
+void LayerChromium::setCanUseLCDText(bool canUseLCDText)
 {
-    m_useLCDText = useLCDText;
+    if (m_canUseLCDText == canUseLCDText)
+        return;
+
+    m_canUseLCDText = canUseLCDText;
+    setNeedsDisplay();
 }
 
 void LayerChromium::setLayerTreeHost(CCLayerTreeHost* host)
@@ -546,7 +550,7 @@ void LayerChromium::pushPropertiesTo(CCLayerImpl* layer)
     layer->setDrawsContent(drawsContent());
     layer->setFilters(filters());
     layer->setBackgroundFilters(backgroundFilters());
-    layer->setUseLCDText(m_useLCDText);
+    layer->setCanUseLCDText(m_canUseLCDText);
     layer->setMasksToBounds(m_masksToBounds);
     layer->setScrollable(m_scrollable);
     layer->setShouldScrollOnMainThread(m_shouldScrollOnMainThread);