[MIPS] Support for MIPS PNaCl in PPAPI

ppapi/native_client/src/trusted/plugin/plugin.gypi

Index: ppapi/native_client/src/trusted/plugin/plugin.gypi
diff --git a/ppapi/native_client/src/trusted/plugin/plugin.gypi b/ppapi/native_client/src/trusted/plugin/plugin.gypi
index fd70909a9b280eb122cdf40f39f7b71bc8112b37..9483ed78204ecf2728c9b2a053e7fe9d19838813 100644
--- a/ppapi/native_client/src/trusted/plugin/plugin.gypi
+++ b/ppapi/native_client/src/trusted/plugin/plugin.gypi
@@ -26,14 +26,17 @@
     ],
     # Append the arch-specific ISA code to common_sources.
     'conditions': [
-      # Note: this test assumes that if this is not an ARM build, then this is
-      # is an x86 build.  This is because |target_arch| for x86 can be one of a
-      # number of values (x64, ia32, etc.).
       ['target_arch=="arm"', {
         'common_sources': [
           'arch_arm/sandbox_isa.cc',
         ],
-      }, {  # else: 'target_arch != "arm"
+      }],
+      ['target_arch=="mipsel"', {
+        'common_sources': [
+          'arch_mips/sandbox_isa.cc',
+        ],
+      }],
+      ['target_arch=="ia32" or target_arch=="x64"', {
         'common_sources': [
           'arch_x86/sandbox_isa.cc',
         ],