use factories instead of manually setting fields

Source/platform/graphics/ImageFrameGeneratorTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 25 matching lines @@
 
 namespace blink {
 
 namespace {
 
 // Helper methods to generate standard sizes.
 SkISize fullSize() { return SkISize::Make(100, 100); }
 
 SkImageInfo imageInfo()
 {
-    SkImageInfo info;
-    info.fWidth = 100;
-    info.fHeight = 100;
-    info.fColorType = kBGRA_8888_SkColorType;
-    info.fAlphaType = kOpaque_SkAlphaType;
-    return info;
+    return SkImageInfo::Make(100, 100, kBGRA_8888_SkColorType, kOpaque_SkAlphaType);
 }
 
 } // namespace
 
 class ImageFrameGeneratorTest : public ::testing::Test, public MockImageDecoderClient {
 public:
     virtual void SetUp() OVERRIDE
     {
         ImageDecodingStore::instance()->setCacheLimitInBytes(1024 * 1024);
         m_data = SharedBuffer::create();
@@ skipping 132 matching lines @@
     static_cast<MockImageDecoder*>(tempDecoder)->setFrameHasAlpha(false);
     ImageDecodingStore::instance()->unlockDecoder(m_generator.get(), tempDecoder);
 
     setFrameStatus(ImageFrame::FrameComplete);
     m_generator->decodeAndScale(imageInfo(), 1, buffer, 100 * 4);
     EXPECT_EQ(2, m_frameBufferRequestCount);
     EXPECT_FALSE(m_generator->hasAlpha(1));
 }
 
 } // namespace blink