Update OpenGLRenderer test to test opaque ARGB8888 bitmaps.

Change-Id: I7159825f4b1d6f5a1cd09ec091994801b52b6bda
diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
index 3f9698d..2e8a8be 100644
--- a/libs/hwui/TextureCache.cpp
+++ b/libs/hwui/TextureCache.cpp
@@ -149,9 +149,11 @@
                 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, bitmap->getPixels());
         break;
     case SkBitmap::kARGB_8888_Config:
-        texture->blend = !bitmap->isOpaque();
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height, 0,
                 GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels());
+        // Do this after calling getPixels() to make sure Skia's deferred
+        // decoding happened
+        texture->blend = !bitmap->isOpaque();
         break;
     default:
         break;