add support for high quality image filtering on the GPU

R=bsalomon@google.com, reed@google.com

Review URL: https://codereview.chromium.org/23779003

git-svn-id: http://skia.googlecode.com/svn/trunk/include@11087 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/core/SkError.h b/core/SkError.h
index c5af460..f3f22e9 100644
--- a/core/SkError.h
+++ b/core/SkError.h
@@ -47,7 +47,12 @@
 
     /** Skia failed while trying to consume some external resource.
      */
-    kParseError_SkError
+    kParseError_SkError,
+    
+    /** Something went wrong internally; could be resource exhaustion but
+      * will often be a bug.
+     */
+    kInternalError_SkError
 };
 
 /** Return the current per-thread error code.  Error codes are "sticky"; they