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

third_party/WebKit/Source/platform/blink_platform.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 222 matching lines @@
     # Disable c4267 warnings until we fix size_t to int truncations.
     # Disable c4724 warnings which is generated in VS2012 due to improper
     # compiler optimizations, see crbug.com/237063
     'msvs_disabled_warnings': [ 4267, 4334, 4724 ],
     'conditions': [
       ['target_arch == "ia32" or target_arch == "x64"', {
         'sources/': [
           ['include', 'graphics/cpu/x86/WebGLImageConversionSSE\\.h$'],
         ],
       }],
+      ['target_arch == "mipsel" or target_arch == "mips64el"', {
+        'sources/': [
+          ['include', 'graphics/cpu/mips/WebGLImageConversionMSA\\.h$'],
+        ],
+      }],
       ['OS=="linux" or OS=="android"', {
         'sources/': [
           ['include', 'fonts/linux/FontPlatformDataLinux\\.cpp$'],
         ]
       }, { # OS!="linux" and OS!="android"
         'sources/': [
           ['exclude', 'fonts/linux/FontPlatformDataLinux\\.cpp$'],
         ]
       }],
       ['OS=="mac"', {
@@ skipping 170 matching lines @@
           ['OS=="android"', {
             'cflags!': ['-mthumb'],
           }],
         ],
       },{  # target_arch!="arm"
         'type': 'none',
       }],
     ],
   }],
 }