MIPS: added optimization for functions from SkBlitRow.

gyp/common_conditions.gypi

 # conditions used in both common.gypi and skia.gyp in chromium
 #
 {
   'defines': [
     'SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=<(skia_static_initializers)',
     'SK_SUPPORT_GPU=<(skia_gpu)',
     'SK_SUPPORT_OPENCL=<(skia_opencl)',
     'SK_FORCE_DISTANCEFIELD_FONTS=<(skia_force_distancefield_fonts)',
   ],
   'conditions' : [
@@ skipping 245 matching lines @@
                 'conditions': [
                   [ 'mips_dsp == 1', {
                     'cflags': [
                       '-mdsp',
                     ],
                   }],
                   [ 'mips_dsp == 2', {
                     'cflags': [
                       '-mdspr2',
                     ],
+                    'defines': [
+                      '__MIPS_HAVE_DSPR2',
+                    ],
                   }],
                 ],
               }],
             ],
           }],
         ],
       },
     ],
 
     ['skia_android_framework', {
@@ skipping 406 matching lines @@
         'SK_BUILD_JSON_WRITER',
       ]
     }],
 
   ], # end 'conditions'
   # The Xcode SYMROOT must be at the root. See build/common.gypi in chromium for more details
   'xcode_settings': {
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }