[wip] image color correction

Source/platform/graphics/ImageSource.cpp

Index: Source/platform/graphics/ImageSource.cpp
diff --git a/Source/platform/graphics/ImageSource.cpp b/Source/platform/graphics/ImageSource.cpp
index 68ce34edfc3b82f8253961589f4e930d8d5e8a95..c87e32bf98f7f05f84c9b311cae69eb720e2df9b 100644
--- a/Source/platform/graphics/ImageSource.cpp
+++ b/Source/platform/graphics/ImageSource.cpp
@@ -30,8 +30,6 @@
 
 #include "platform/graphics/DeferredImageDecoder.h"
 #include "platform/image-decoders/ImageDecoder.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/PassRefPtr.h"
 
 namespace WebCore {
 
@@ -55,12 +53,15 @@ bool ImageSource::initialized() const
     return m_decoder;
 }
 
+void ImageSource::resetDecoder()
+{
+    m_decoder.clear();
+}
+
 void ImageSource::setData(SharedBuffer& data, bool allDataReceived)
 {
-    // Make the decoder by sniffing the bytes.
-    // This method will examine the data and instantiate an instance of the appropriate decoder plugin.
-    // If insufficient bytes are available to determine the image type, no decoder plugin will be
-    // made.
+    // Create a decoder by sniffing the encoded data. If insufficient data bytes are available to
+    // determine the encoded image type, no decoder is created.
     if (!m_decoder)
         m_decoder = DeferredImageDecoder::create(data, m_alphaOption, m_gammaAndColorProfileOption);
 
@@ -83,6 +84,11 @@ bool ImageSource::hasColorProfile() const
     return m_decoder && m_decoder->hasColorProfile();
 }
 
+PassRefPtr<ColorSpaceProfile> ImageSource::colorProfile() const
+{
+    return m_decoder ? m_decoder->colorProfile() : nullptr;
+}
+
 IntSize ImageSource::size(RespectImageOrientationEnum shouldRespectOrientation) const
 {
     return frameSizeAtIndex(0, shouldRespectOrientation);
@@ -166,9 +172,7 @@ bool ImageSource::frameIsCompleteAtIndex(size_t index) const
 
 unsigned ImageSource::frameBytesAtIndex(size_t index) const
 {
-    if (!m_decoder)
-        return 0;
-    return m_decoder->frameBytesAtIndex(index);
+    return m_decoder ? m_decoder->frameBytesAtIndex(index) : 0;
 }
 
 }