change asABitmap to isABitmap on shader

src/utils/SkLua.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLua.h"
 
 #if SK_SUPPORT_GPU
@@ skipping 1182 matching lines @@
     };
     SkASSERT((unsigned)t < SK_ARRAY_COUNT(gNames));
     return gNames[t];
 }
 
 static int lshader_isOpaque(lua_State* L) {
     SkShader* shader = get_ref<SkShader>(L, 1);
     return shader && shader->isOpaque();
 }
 
-static int lshader_asABitmap(lua_State* L) {
+static int lshader_isABitmap(lua_State* L) {
     SkShader* shader = get_ref<SkShader>(L, 1);
     if (shader) {
         SkBitmap bm;
         SkMatrix matrix;
         SkShader::TileMode modes[2];
-        switch (shader->asABitmap(&bm, &matrix, modes)) {
-            case SkShader::kDefault_BitmapType:
-                lua_newtable(L);
-                setfield_number(L, "genID", bm.pixelRef() ? bm.pixelRef()->getGenerationID() : 0);
-                setfield_number(L, "width", bm.width());
-                setfield_number(L, "height", bm.height());
-                setfield_string(L, "tileX", mode2string(modes[0]));
-                setfield_string(L, "tileY", mode2string(modes[1]));
-                return 1;
-            default:
-                break;
+        if (shader->isABitmap(&bm, &matrix, modes)) {
+            lua_newtable(L);
+            setfield_number(L, "genID", bm.pixelRef() ? bm.pixelRef()->getGenerationID() : 0);
+            setfield_number(L, "width", bm.width());
+            setfield_number(L, "height", bm.height());
+            setfield_string(L, "tileX", mode2string(modes[0]));
+            setfield_string(L, "tileY", mode2string(modes[1]));
+            return 1;
         }
     }
     return 0;
 }
 
 static int lshader_asAGradient(lua_State* L) {
     SkShader* shader = get_ref<SkShader>(L, 1);
     if (shader) {
         SkShader::GradientInfo info;
         sk_bzero(&info, sizeof(info));
@@ skipping 23 matching lines @@
     return 0;
 }
 
 static int lshader_gc(lua_State* L) {
     get_ref<SkShader>(L, 1)->unref();
     return 0;
 }
 
 static const struct luaL_Reg gSkShader_Methods[] = {
     { "isOpaque",       lshader_isOpaque },
-    { "asABitmap",      lshader_asABitmap },
+    { "isABitmap",      lshader_isABitmap },
     { "asAGradient",    lshader_asAGradient },
     { "__gc",           lshader_gc },
     { NULL, NULL }
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static int lpatheffect_asADash(lua_State* L) {
     SkPathEffect* pe = get_ref<SkPathEffect>(L, 1);
     if (pe) {
@@ skipping 791 matching lines @@
     REG_CLASS(L, SkSurface);
     REG_CLASS(L, SkTextBlob);
     REG_CLASS(L, SkTypeface);
 }
 
 extern "C" int luaopen_skia(lua_State* L);
 extern "C" int luaopen_skia(lua_State* L) {
     SkLua::Load(L);
     return 0;
 }