[qcms] Apply qcms color matching api to Blink images

third_party/WebKit/Source/platform/image-decoders/png/PNGImageDecoder.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * Portions are Copyright (C) 2001 mozilla.org
  *
  * Other contributors:
  *   Stuart Parmenter <stuart@mozilla.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 156 matching lines @@
         qcms_profile* deviceProfile = ImageDecoder::qcmsOutputDeviceProfile();
         if (!deviceProfile)
             return;
         qcms_profile* inputProfile = 0;
         if (!colorProfile.isEmpty())
             inputProfile = qcms_profile_from_memory(colorProfile.data(), colorProfile.size());
         else
             inputProfile = qcms_profile_sRGB();
         if (!inputProfile)
             return;
+
         // We currently only support color profiles for RGB and RGBA images.
         ASSERT(rgbData == qcms_profile_get_color_space(inputProfile));
+
+        if (qcms_profile_match(inputProfile, deviceProfile)) {
+            qcms_profile_release(inputProfile);
+            return;
+        }
+
+        // FIXME: Don't force perceptual intent if the image profile contains an intent.
         qcms_data_type dataFormat = hasAlpha ? QCMS_DATA_RGBA_8 : QCMS_DATA_RGB_8;
-        // FIXME: Don't force perceptual intent if the image profile contains an intent.
         m_transform = qcms_transform_create(inputProfile, dataFormat, deviceProfile, dataFormat, QCMS_INTENT_PERCEPTUAL);
+
         qcms_profile_release(inputProfile);
     }
 #endif
 
 private:
     png_structp m_png;
     png_infop m_info;
     PNGImageDecoder* m_decoder;
     unsigned m_readOffset;
     unsigned m_currentBufferSize;
@@ skipping 304 matching lines @@
     // has failed.
     if (!m_reader->decode(*m_data, onlySize) && isAllDataReceived())
         setFailed();
 
     // If decoding is done or failed, we don't need the PNGImageReader anymore.
     if (isComplete(this) || failed())
         m_reader.clear();
 }
 
 } // namespace blink