[MIPS] Add support to gyp files to build Native Client inside of Chromium

build/build_nexe.py

Index: build/build_nexe.py
diff --git a/build/build_nexe.py b/build/build_nexe.py
index add87ad6df57fd26510e4eb27ebb2756e6f1b560..3ef415180427a3578173d29e2c040e0dad16b1e9 100644
--- a/build/build_nexe.py
+++ b/build/build_nexe.py
@@ -169,6 +169,8 @@ class Builder(object):
       self.subarch = ''
       self.tool_prefix = 'arm-nacl-'
       mainarch = 'arm'
+    elif arch == 'mips':
+      self.is_pnacl_toolchain = True
     elif arch == 'pnacl':
       self.subarch = ''
       self.is_pnacl_toolchain = True
@@ -181,6 +183,9 @@ class Builder(object):
     if arch == 'arm' and toolname == 'glibc':
       raise Error('arm glibc not yet supported.')
 
+    if arch == 'mips' and toolname == 'glibc':
+      raise Error('mips glibc not supported.')
+
     if arch == 'pnacl' and toolname == 'glibc':
       raise Error('pnacl glibc not yet supported.')