Allow frames to be free'd even for static images

Source/platform/image-decoders/ImageDecoderTest.cpp

Index: Source/platform/image-decoders/ImageDecoderTest.cpp
diff --git a/Source/platform/image-decoders/ImageDecoderTest.cpp b/Source/platform/image-decoders/ImageDecoderTest.cpp
index 9d4ba3b742ff66f2af84ea671d46183ebb22e146..bd52b1377397a6b3c1bcecd7d30234682fffc5b1 100644
--- a/Source/platform/image-decoders/ImageDecoderTest.cpp
+++ b/Source/platform/image-decoders/ImageDecoderTest.cpp
@@ -228,6 +228,18 @@ TEST(ImageDecoderTest, clearCacheExceptFrameAll)
     }
 }
 
+TEST(ImageDecoderTest, clearCacheExceptFrameAllSingleFrame)
+{
+    OwnPtr<TestImageDecoder> decoder(adoptPtr(new TestImageDecoder()));
+    decoder->initFrames(1);
+    ImageFrame* frame = &decoder->frameBufferCache().first();
+    frame->setStatus(ImageFrame::FrameComplete);
+
+    decoder->clearCacheExceptFrame(kNotFound);
+

[Peter Kasting, 2014/01/14 20:04:49]

Nit: Extra blank line (line 224 could probably also be nuked)

[fs, 2014/01/15 09:48:24]

Will prune.

+    EXPECT_EQ(ImageFrame::FrameEmpty, frame->status());
+}
+
 TEST(ImageDecoderTest, clearCacheExceptFramePreverveClearExceptFrame)
 {
     const size_t numFrames = 10;