Revert "Change clear() to respect the clip"

include/core/SkDevice.h

Index: include/core/SkDevice.h
diff --git a/include/core/SkDevice.h b/include/core/SkDevice.h
index f20ebf719ab7283014f17488b376fb554208b9fb..3c26baca5b012da04a84b38b470f926e6bb279dc 100644
--- a/include/core/SkDevice.h
+++ b/include/core/SkDevice.h
@@ -163,9 +163,8 @@ protected:
 
     /** Clears the entire device to the specified color (including alpha).
      *  Ignores the clip.
-     *  DEPRECATED : will go away when chrome subclasses have been updated
      */
-    virtual void clear(SkColor color);
+    virtual void clear(SkColor color) = 0;
 
     SK_ATTR_DEPRECATED("use clear() instead")
     void eraseColor(SkColor eraseColor) { this->clear(eraseColor); }