GIF decoding to Index8, unit tests and misusing unit test as benchmark

third_party/WebKit/Source/platform/image-decoders/ImageFrame.h

Index: third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h b/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
index b5d1490fa484e330e0b3ce1084a75bf873d456e1..9e32d5d402b3cda20813e2d68a3d0c142494931e 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageFrame.h
@@ -30,6 +30,7 @@
 #include "platform/PlatformExport.h"
 #include "platform/geometry/IntRect.h"
 #include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkColorPriv.h"
 #include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 #include "wtf/PassRefPtr.h"
@@ -68,7 +69,12 @@ public:
         // overwrite the corresponding pixels).
         BlendAtopBgcolor,
     };
+    enum ColorType {
+        N32 = kN32_SkColorType,
+        Index8 = kIndex_8_SkColorType
+    };
     typedef uint32_t PixelData;
+    typedef uint8_t PixelData8;
 
     ImageFrame();
 
@@ -92,6 +98,7 @@ public:
     // pixel data, so that modifications in one frame are not reflected in
     // the other.  Returns whether the copy succeeded.
     bool copyBitmapData(const ImageFrame&);
+    bool copyBitmapData(const ImageFrame&, ImageFrame::ColorType);
 
     // Copies the pixel data at [(startX, startY), (endX, startY)) to the
     // same X-coordinates on each subsequent row up to but not including
@@ -112,6 +119,7 @@ public:
     // are written.  Must only be called once.  Returns whether allocation
     // succeeded.
     bool setSize(int newWidth, int newHeight);
+    bool setSizeIndex8(int newWidth, int newHeight, const Vector<blink::ImageFrame::PixelData>& colorMap, size_t indexOfTransparent = kNotFound);
 
     // Returns a caller-owned pointer to the underlying native image data.
     // (Actual use: This pointer will be owned by BitmapImage and freed in
@@ -148,6 +156,11 @@ public:
         return m_bitmap.getAddr32(x, y);
     }
 
+    inline PixelData8* getAddr8(int x, int y)
+    {
+        return m_bitmap.getAddr8(x, y);
+    }
+
     inline void setRGBA(int x, int y, unsigned r, unsigned g, unsigned b, unsigned a)
     {
         setRGBA(getAddr(x, y), r, g, b, a);