Revert of Allow frames to be free'd even for static images

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 388 matching lines @@
     ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
 
     setFrameStatus(ImageFrame::FrameEmpty);
     setNextFrameStatus(ImageFrame::FrameComplete);
     EXPECT_FALSE(m_generator->decodeAndScale(fullSize(), 1));
 }
 
 TEST_F(ImageFrameGeneratorTest, frameHasAlpha)
 {
     setFrameStatus(ImageFrame::FramePartial);
-    ImageDecodingStore::instance()->unlockCache(m_generator.get(), m_generator->decodeAndScale(fullSize(), 0));
-    EXPECT_TRUE(m_generator->hasAlpha(0));
+    ImageDecodingStore::instance()->unlockCache(m_generator.get(), m_generator->decodeAndScale(fullSize(), 1));
+    EXPECT_TRUE(m_generator->hasAlpha(1));
 
     ImageDecoder* tempDecoder = 0;
     EXPECT_TRUE(ImageDecodingStore::instance()->lockDecoder(m_generator.get(), fullSize(), &tempDecoder));
     ASSERT_TRUE(tempDecoder);
     static_cast<MockImageDecoder*>(tempDecoder)->setFrameHasAlpha(false);
     ImageDecodingStore::instance()->unlockDecoder(m_generator.get(), tempDecoder);
 
     setFrameStatus(ImageFrame::FrameComplete);
-    ImageDecodingStore::instance()->unlockCache(m_generator.get(), m_generator->decodeAndScale(fullSize(), 0));
-    EXPECT_FALSE(m_generator->hasAlpha(0));
+    ImageDecodingStore::instance()->unlockCache(m_generator.get(), m_generator->decodeAndScale(fullSize(), 1));
+    EXPECT_FALSE(m_generator->hasAlpha(1));
 }
 
 namespace {
 
 class MockAllocator : public SkBitmap::Allocator {
 public:
     // N starts from 0.
     MockAllocator(int failAtNthCall)
         : m_callCount(0)
         , m_failAtNthCall(failAtNthCall)
@@ skipping 30 matching lines @@
             // We have tested failures of all stages. This time all allocations
             // were successful.
             EXPECT_TRUE(image);
             break;
         }
         EXPECT_FALSE(image);
     }
 }
 
 } // namespace WebCore