Observe surface LCD settings in SkBaseDevice::drawTextBlob()

include/core/SkDevice.h

Index: include/core/SkDevice.h
diff --git a/include/core/SkDevice.h b/include/core/SkDevice.h
index d9354491c08ff57a2f39610cbccd88f7e931c68b..43cb32c8c92574f0ed44fd0cc2ee111752f36f5b 100644
--- a/include/core/SkDevice.h
+++ b/include/core/SkDevice.h
@@ -117,8 +117,6 @@ public:
 #endif
     };
 
-    bool shouldDisableLCD(const SkPaint&) const;
-
 protected:
     enum Usage {
        kGeneral_Usage,
@@ -130,6 +128,12 @@ protected:
         uint32_t    fFlags;     // SkPaint::getFlags()
     };
 
+    /**
+     * Returns the text-related flags, possibly modified based on the state of the
+     * device (e.g. support for LCD).
+     */
+    uint32_t filterTextFlags(const SkPaint&) const;
+
     virtual bool onShouldDisableLCD(const SkPaint&) const { return false; }
 
     /**