Simple test for Android fd directories.

base/memory/shared_memory_unittest.cc

Index: base/memory/shared_memory_unittest.cc
diff --git a/base/memory/shared_memory_unittest.cc b/base/memory/shared_memory_unittest.cc
index 892fd7f1a590b0d20b8f9e6289b07a225c8676fa..10d38d5e14061f1393d3df509b853be7913833cb 100644
--- a/base/memory/shared_memory_unittest.cc
+++ b/base/memory/shared_memory_unittest.cc
@@ -20,6 +20,7 @@
 #endif
 
 #if defined(OS_POSIX)
+#include <errno.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -361,6 +362,14 @@ TEST(SharedMemoryTest, AnonymousPrivate) {
   }
 }
 
+TEST(SharedMemoryTest, AndroidFiles) {
+  EXPECT_EQ(0, access("/dev", X_OK)) << strerror(errno);
+  EXPECT_EQ(0, access("/dev/fd", X_OK)) << strerror(errno);
+  EXPECT_EQ(0, access("/proc", X_OK)) << strerror(errno);
+  EXPECT_EQ(0, access("/proc/self", X_OK)) << strerror(errno);
+  EXPECT_EQ(0, access("/proc/self/fd", X_OK)) << strerror(errno);
+}
+
 TEST(SharedMemoryTest, MapAt) {
   ASSERT_TRUE(SysInfo::VMAllocationGranularity() >= sizeof(uint32));
   const size_t kCount = SysInfo::VMAllocationGranularity();