Creating functions for uploading a mipmapped texture.

src/core/SkMipMap.cpp

Index: src/core/SkMipMap.cpp
diff --git a/src/core/SkMipMap.cpp b/src/core/SkMipMap.cpp
index 032a60d0f1f6b420cc674b389f0ae7db8f178cb7..69c58547af6b20de53a46c8eb246c2aa6d01d619 100644
--- a/src/core/SkMipMap.cpp
+++ b/src/core/SkMipMap.cpp
@@ -351,3 +351,23 @@ bool SkMipMap::extractLevel(SkScalar scale, Level* levelPtr) const {
     }
     return true;
 }
+
+int SkMipMap::getLevelsCount() const {
+    return fCount;
+}
+
+bool SkMipMap::getLevel(int levelIndex, Level* levelPtr) const {
+    if (NULL == fLevels) {
+        return false;
+    }
+    if (levelIndex <= 0) {
+        return false;
+    }
+    if (levelIndex > fCount) {
+        levelIndex = fCount;
+    }
+    if (levelPtr) {
+        *levelPtr = fLevels[levelIndex - 1];
+    }
+    return true;
+}