Revert "Add a way to turn off unique_fd's operator int."

This reverts commit 93d63c010ae24ff58acb70216bfcb93e3c73019a.

Reason for revert: b/131312539 - All aosp-master-with-phones phones failing boot / health check.

Change-Id: Id4239f93484b7d6b8d9bcd355a59cbd40d9766e2
diff --git a/adb/client/commandline.cpp b/adb/client/commandline.cpp
index afb3ed0..43a3e5e 100644
--- a/adb/client/commandline.cpp
+++ b/adb/client/commandline.cpp
@@ -262,7 +262,7 @@
 // stdout/stderr are routed independently and the remote exit code will be
 // returned.
 // if |callback| is non-null, stdout/stderr output will be handled by it.
-int read_and_dump(borrowed_fd fd, bool use_shell_protocol = false,
+int read_and_dump(int fd, bool use_shell_protocol = false,
                   StandardStreamsCallbackInterface* callback = &DEFAULT_STANDARD_STREAMS_CALLBACK) {
     int exit_code = 0;
     if (fd < 0) return exit_code;
@@ -305,9 +305,9 @@
             }
             length = protocol->data_length();
         } else {
-            D("read_and_dump(): pre adb_read(fd=%d)", fd.get());
+            D("read_and_dump(): pre adb_read(fd=%d)", fd);
             length = adb_read(fd, raw_buffer, sizeof(raw_buffer));
-            D("read_and_dump(): post adb_read(fd=%d): length=%d", fd.get(), length);
+            D("read_and_dump(): post adb_read(fd=%d): length=%d", fd, length);
             if (length <= 0) {
                 break;
             }
@@ -884,7 +884,7 @@
             return -1;
         }
         fprintf(stderr, "adb: trying pre-KitKat sideload method...\n");
-        return adb_sideload_legacy(filename, package_fd.get(), static_cast<int>(sb.st_size));
+        return adb_sideload_legacy(filename, package_fd, static_cast<int>(sb.st_size));
     }
 
     int opt = SIDELOAD_HOST_BLOCK_SIZE;
@@ -1172,14 +1172,14 @@
     return send_shell_command(cmd);
 }
 
-static void write_zeros(int bytes, borrowed_fd fd) {
+static void write_zeros(int bytes, int fd) {
     int old_stdin_mode = -1;
     int old_stdout_mode = -1;
     std::vector<char> buf(bytes);
 
-    D("write_zeros(%d) -> %d", bytes, fd.get());
+    D("write_zeros(%d) -> %d", bytes, fd);
 
-    stdinout_raw_prologue(-1, fd.get(), old_stdin_mode, old_stdout_mode);
+    stdinout_raw_prologue(-1, fd, old_stdin_mode, old_stdout_mode);
 
     if (fd == STDOUT_FILENO) {
         fwrite(buf.data(), 1, bytes, stdout);
@@ -1188,7 +1188,7 @@
         adb_write(fd, buf.data(), bytes);
     }
 
-    stdinout_raw_prologue(-1, fd.get(), old_stdin_mode, old_stdout_mode);
+    stdinout_raw_prologue(-1, fd, old_stdin_mode, old_stdout_mode);
 
     D("write_zeros() finished");
 }