base: Use std::move() instead of Pass() for real movable types.

base/memory/shared_memory_posix.cc

Index: base/memory/shared_memory_posix.cc
diff --git a/base/memory/shared_memory_posix.cc b/base/memory/shared_memory_posix.cc
index e1e5bf249e313e916cbe5664d7e30bcb3906f410..28c103f96040228c0ea5c98601e9d92ffcfe18f8 100644
--- a/base/memory/shared_memory_posix.cc
+++ b/base/memory/shared_memory_posix.cc
@@ -311,7 +311,7 @@ bool SharedMemory::Create(const SharedMemoryCreateOptions& options) {
     return false;
   }
 
-  return PrepareMapFile(fp.Pass(), readonly_fd.Pass());
+  return PrepareMapFile(std::move(fp), std::move(readonly_fd));
 }
 
 // Our current implementation of shmem is with mmap()ing of files.
@@ -343,7 +343,7 @@ bool SharedMemory::Open(const std::string& name, bool read_only) {
     DPLOG(ERROR) << "open(\"" << path.value() << "\", O_RDONLY) failed";
     return false;
   }
-  return PrepareMapFile(fp.Pass(), readonly_fd.Pass());
+  return PrepareMapFile(std::move(fp), std::move(readonly_fd));
 }
 #endif  // !defined(OS_ANDROID)