Update idl files in third_party/WebCore

html/canvas/WebGLCompressedTextureATC.idl

Index: html/canvas/WebGLCompressedTextureATC.idl
diff --git a/html/canvas/WebGLCompressedTextureS3TC.idl b/html/canvas/WebGLCompressedTextureATC.idl
similarity index 79%
copy from html/canvas/WebGLCompressedTextureS3TC.idl
copy to html/canvas/WebGLCompressedTextureATC.idl
index 6642d28a5e7c33934798c61ba69e1a9914c511a1..a11b32b1229cf5d900e1d02460a634c57e8e9c04 100644
--- a/html/canvas/WebGLCompressedTextureS3TC.idl
+++ b/html/canvas/WebGLCompressedTextureATC.idl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Google Inc. All rights reserved.
+ * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -28,10 +28,9 @@
     JSGenerateIsReachable=ImplContext,
     OmitConstructor,
     DoNotCheckConstants
-] interface WebGLCompressedTextureS3TC {
+] interface WebGLCompressedTextureATC {
     /* Compressed Texture Formats */
-    const unsigned int COMPRESSED_RGB_S3TC_DXT1_EXT        = 0x83F0;
-    const unsigned int COMPRESSED_RGBA_S3TC_DXT1_EXT       = 0x83F1;
-    const unsigned int COMPRESSED_RGBA_S3TC_DXT3_EXT       = 0x83F2;
-    const unsigned int COMPRESSED_RGBA_S3TC_DXT5_EXT       = 0x83F3;
+    const unsigned int COMPRESSED_RGB_ATC_WEBGL                     = 0x8C92;
+    const unsigned int COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL     = 0x8C93;
+    const unsigned int COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL = 0x87EE;
 };