Implement the texture uploading of ASTC compression for WebGL(part II)

Source/modules/webgl/WebGLCompressedTextureASTC.idl

Index: Source/modules/webgl/WebGLCompressedTextureASTC.idl
diff --git a/Source/modules/webgl/WebGLCompressedTextureASTC.idl b/Source/modules/webgl/WebGLCompressedTextureASTC.idl
new file mode 100644
index 0000000000000000000000000000000000000000..43db7d6b3417e1747d7d3a4b1e63d1c6a6b925b0
--- /dev/null
+++ b/Source/modules/webgl/WebGLCompressedTextureASTC.idl
@@ -0,0 +1,40 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[
+    NoInterfaceObject,
+    DoNotCheckConstants,
+    GarbageCollected,
+    SetWrapperReferenceFrom=canvas,
+] interface WebGLCompressedTextureASTC {
+    /* Compressed Texture Formats */
+    const unsigned long COMPRESSED_RGBA_ASTC_4x4_KHR           = 0x93B0;
+    const unsigned long COMPRESSED_RGBA_ASTC_5x4_KHR           = 0x93B1;
+    const unsigned long COMPRESSED_RGBA_ASTC_5x5_KHR           = 0x93B2;
+    const unsigned long COMPRESSED_RGBA_ASTC_6x5_KHR           = 0x93B3;
+    const unsigned long COMPRESSED_RGBA_ASTC_6x6_KHR           = 0x93B4;
+    const unsigned long COMPRESSED_RGBA_ASTC_8x5_KHR           = 0x93B5;
+    const unsigned long COMPRESSED_RGBA_ASTC_8x6_KHR           = 0x93B6;
+    const unsigned long COMPRESSED_RGBA_ASTC_8x8_KHR           = 0x93B7;
+    const unsigned long COMPRESSED_RGBA_ASTC_10x5_KHR          = 0x93B8;
+    const unsigned long COMPRESSED_RGBA_ASTC_10x6_KHR          = 0x93B9;
+    const unsigned long COMPRESSED_RGBA_ASTC_10x8_KHR          = 0x93BA;
+    const unsigned long COMPRESSED_RGBA_ASTC_10x10_KHR         = 0x93BB;
+    const unsigned long COMPRESSED_RGBA_ASTC_12x10_KHR         = 0x93BC;
+    const unsigned long COMPRESSED_RGBA_ASTC_12x12_KHR         = 0x93BD;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR   = 0x93D0;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR   = 0x93D1;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR   = 0x93D2;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR   = 0x93D3;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR   = 0x93D4;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR   = 0x93D5;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR   = 0x93D6;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR   = 0x93D7;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR  = 0x93D8;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR  = 0x93D9;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR  = 0x93DA;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR = 0x93DB;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR = 0x93DC;
+    const unsigned long COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR = 0x93DD;
+};