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 14e87a33a3ba996e362dc1ed3cba6c164d08b5cf..262fbafab6e3bdfb83acd42c71cdb689f0888f61 100644
--- a/src/core/SkMipMap.cpp
+++ b/src/core/SkMipMap.cpp
@@ -351,7 +351,7 @@ bool SkMipMap::extractLevel(SkScalar scale, Level* levelPtr) const {
     return true;
 }
 
-// Helper which extacts a pixmap from the src bitmap
+// Helper which extracts a pixmap from the src bitmap
 //
 SkMipMap* SkMipMap::Build(const SkBitmap& src, SkDiscardableFactoryProc fact) {
     SkAutoPixmapUnlock srcUnlocker;
@@ -366,3 +366,22 @@ SkMipMap* SkMipMap::Build(const SkBitmap& src, SkDiscardableFactoryProc fact) {
     return Build(srcPixmap, fact);
 }
 
+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) {
+        return false;
+    }
+    if (levelPtr) {
+        *levelPtr = fLevels[levelIndex - 1];
+    }
+    return true;
+}