Merge 92867 - [Chromium] Temporarily disable layer anti-aliasing on ChromeOS.

Source/WebCore/platform/graphics/chromium/LayerTilerChromium.cpp

Index: Source/WebCore/platform/graphics/chromium/LayerTilerChromium.cpp
===================================================================
--- Source/WebCore/platform/graphics/chromium/LayerTilerChromium.cpp	(revision 92875)
+++ Source/WebCore/platform/graphics/chromium/LayerTilerChromium.cpp	(working copy)
@@ -377,9 +377,14 @@
     if (m_skipsDraw || !m_tiles.size() || contentRect.isEmpty())
         return;
 
+#if defined(OS_CHROMEOS)
+    // FIXME: Disable anti-aliasing to workaround broken driver.
+    bool useAA = false;
+#else
     // Use anti-aliasing programs when border texels are preset and transform
     // is not an integer translation.
     bool useAA = (m_tilingData.borderTexels() && !globalTransform.isIntegerTranslation());
+#endif
 
     switch (m_sampledTexelFormat) {
     case LayerTextureUpdater::SampledTexelFormatRGBA: