Remove calls to deprecated SkBitmap::setIsOpaque()

setIsOpaque() has been removed from ToT Skia.

Update setters for mIsPremultiplied and hasAlpha to take the
other into consideration.

Change-Id: I1b36b0b0ce7126031eb7b769b563c17dcd4b306a
diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
index 457ca59..467f6ca 100644
--- a/libs/hwui/TextureCache.cpp
+++ b/libs/hwui/TextureCache.cpp
@@ -285,10 +285,9 @@
 void TextureCache::uploadLoFiTexture(bool resize, const SkBitmap* bitmap,
         uint32_t width, uint32_t height) {
     SkBitmap rgbaBitmap;
-    rgbaBitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
+    rgbaBitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height, 0, bitmap->alphaType());
     rgbaBitmap.allocPixels();
     rgbaBitmap.eraseColor(0);
-    rgbaBitmap.setIsOpaque(bitmap->isOpaque());
 
     SkCanvas canvas(rgbaBitmap);
     canvas.drawBitmap(*bitmap, 0.0f, 0.0f, NULL);