Remove duplication of encoded image data

third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp

Index: third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp b/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
index eb5de1a909716bea14bfc45f370fd9f8c6ddd291..010e3cc08bc5bb78a02d5a538ea647f15f71d164 100644
--- a/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
+++ b/third_party/WebKit/Source/platform/graphics/BitmapImageTest.cpp
@@ -140,6 +140,9 @@ public:
         return m_imageObserver->m_lastDecodedSizeChangedDelta;
     }
 
+    PassRefPtr<SharedBuffer> data() { return m_image->data(); }
+    PassRefPtr<SharedBuffer> cachedData() { return m_image->cachedData(); }
+
 protected:
     void SetUp() override
     {
@@ -216,6 +219,16 @@ TEST_F(BitmapImageTest, noColorProfile)
     EXPECT_FALSE(m_image->hasColorProfile());
 }
 
+TEST_F(BitmapImageTest, noCachedData)
+{
+    loadImage("/LayoutTests/fast/images/resources/green.jpg");
+    EXPECT_TRUE(m_image->isAllDataReceived());
+    // m_image doesn't have its encoded image data. Instead, its
+    // DeferredImageDecoder has it and data() returns this.
+    EXPECT_FALSE(cachedData());
+    EXPECT_TRUE(data());
+}
+
 #if USE(QCMSLIB)
 
 TEST_F(BitmapImageTest, jpegHasColorProfile)