Add MIPS SIMD Arch (MSA) optimized WebGL image conversion function

third_party/WebKit/Source/platform/graphics/gpu/WebGLImageConversion.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/gpu/WebGLImageConversion.h"
 
 #include "platform/CheckedInt.h"
 #include "platform/graphics/ImageObserver.h"
 #include "platform/graphics/cpu/arm/WebGLImageConversionNEON.h"
+#include "platform/graphics/cpu/mips/WebGLImageConversionMSA.h"
 #include "platform/graphics/cpu/x86/WebGLImageConversionSSE.h"
 #include "platform/graphics/skia/SkiaUtils.h"
 #include "platform/image-decoders/ImageDecoder.h"
 #include "third_party/skia/include/core/SkImage.h"
 #include "wtf/PtrUtil.h"
 #include <memory>
 
 namespace blink {
 
 namespace {
@@ skipping 421 matching lines @@
 }
 
 template<> void unpack<WebGLImageConversion::DataFormatRGBA5551, uint16_t, uint8_t>(const uint16_t* source, uint8_t* destination, unsigned pixelsPerRow)
 {
 #if CPU(X86) || CPU(X86_64)
     SIMD::unpackOneRowOfRGBA5551LittleToRGBA8(source, destination, pixelsPerRow);
 #endif
 #if HAVE(ARM_NEON_INTRINSICS)
     SIMD::unpackOneRowOfRGBA5551ToRGBA8(source, destination, pixelsPerRow);
 #endif
+#if HAVE(MIPS_MSA_INTRINSICS)
+    SIMD::unpackOneRowOfRGBA5551ToRGBA8MSA(source, destination, pixelsPerRow);
+#endif
+
     for (unsigned i = 0; i < pixelsPerRow; ++i) {
         uint16_t packedValue = source[0];
         uint8_t r = packedValue >> 11;
         uint8_t g = (packedValue >> 6) & 0x1F;
         uint8_t b = (packedValue >> 1) & 0x1F;
         destination[0] = (r << 3) | (r & 0x7);
         destination[1] = (g << 3) | (g & 0x7);
         destination[2] = (b << 3) | (b & 0x7);
         destination[3] = (packedValue & 0x1) ? 0xFF : 0x0;
         source += 1;
@@ skipping 1941 matching lines @@
     }
 
     FormatConverter converter(width, height, sourceData, destinationData, srcStride, dstStride);
     converter.convert(sourceDataFormat, dstDataFormat, alphaOp);
     if (!converter.Success())
         return false;
     return true;
 }
 
 } // namespace blink