Fix common.gypi when run with target_arch=mips

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index f6aa35e101fd935f542a29476322a88665b5aab5..cd906aa1ea93653e0ed64abf0e361eab1411dd2a 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -306,7 +306,6 @@
 
           ['OS=="linux" and target_arch=="mipsel"', {
             'sysroot%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/sysroot',
-            'CXX%': '<!(cd <(DEPTH) && pwd -P)/mipsel-sysroot/bin/mipsel-linux-gnu-gcc',
           }],
         ],
       },
@@ -1609,10 +1608,6 @@
             'nacl_untrusted_build%': 0,
             'use_allocator%': 'none',
           }],
-          ['OS=="linux" and target_arch=="mipsel"', {
-            'sysroot%': '<(sysroot)',
-            'CXX%': '<(CXX)',
-          }],
           # Use a 64-bit linker to avoid running out of address space. The
           # buildbots should have a 64-bit kernel and a 64-bit libc installed.
           ['host_arch=="ia32" and target_arch=="ia32"', {