Turn off SSE2 when building for ARM or MIPS.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index a6ba88088eb46ac456e34f5f21dd31980aad32b4..a993fb0cc6e79a8782b0cf8953b9027b51715384 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -619,7 +619,6 @@
     'arm_neon%': '<(arm_neon)',
     'sysroot%': '<(sysroot)',
     'system_libdir%': '<(system_libdir)',
-    'disable_sse2%': '<(disable_sse2)',
     'component%': '<(component)',
     'use_titlecase_in_grd_files%': '<(use_titlecase_in_grd_files)',
     'use_third_party_translations%': '<(use_third_party_translations)',
@@ -1174,6 +1173,13 @@
         'disable_glibc%': 0,
       }],
 
+      # Disable SSE2 when building for ARM or MIPS.
+      ['target_arch=="arm" or target_arch=="mipsel"', {
+        'disable_sse2%': 1,
+      }, {
+        'disable_sse2%': '<(disable_sse2)',
+      }],
+
       # Set the relative path from this file to the GYP file of the JPEG
       # library used by Chromium.
       ['use_system_libjpeg==1 or use_libjpeg_turbo==0', {