Remove uses of SkBitmap::Config (deprecated) from core/ and platform/.

Source/platform/graphics/ImageDecodingStoreTest.cpp

Index: Source/platform/graphics/ImageDecodingStoreTest.cpp
diff --git a/Source/platform/graphics/ImageDecodingStoreTest.cpp b/Source/platform/graphics/ImageDecodingStoreTest.cpp
index 891b9d50b4f6749f58cef5893efc88463172dcef..f043e5e6cd13438b6b8ec418567c0de36b21abc7 100644
--- a/Source/platform/graphics/ImageDecodingStoreTest.cpp
+++ b/Source/platform/graphics/ImageDecodingStoreTest.cpp
@@ -77,7 +77,7 @@ protected:
     PassOwnPtr<ScaledImageFragment> createCompleteImage(const SkISize& size, bool discardable = false, size_t index = 0)
     {
         SkBitmap bitmap;
-        bitmap.setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
+        bitmap.setConfig(SkImageInfo::MakeN32Premul(size));
         if (!discardable) {
             bitmap.allocPixels();
         } else {
@@ -90,7 +90,7 @@ protected:
     PassOwnPtr<ScaledImageFragment> createIncompleteImage(const SkISize& size, bool discardable = false, size_t generation = 0)
     {
         SkBitmap bitmap;
-        bitmap.setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
+        bitmap.setConfig(SkImageInfo::MakeN32Premul(size));
         if (!discardable) {
             bitmap.allocPixels();
         } else {