Add remoting Linux debug symbols to the upload list

This CL attempts to make the official build bot upload remoting debug
symbols, so that we can use them to decipher stack traces coming from an
official build remoting Linux host.

Bug: 1136663
Change-Id: I5669140b3b63399d521644de3b8524def6092560
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2462547Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Michael Moss <mmoss@chromium.org>
Commit-Queue: Yuwei Huang <yuweih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815701}

chrome/tools/build/linux/FILES.cfg

@@ -154,6 +154,20 @@ FILES = [
     'buildtype': ['official'],
     'archive': 'remoting-me2me-host-linux.zip',
   },
+  # Remoting symbols:
+  {
+    'filename': 'remote_assistance_host.debug',
+    'arch': ['64bit'],
+    'buildtype': ['dev', 'official'],
+    'archive': 'remoting-debug-info.zip',
+  },
+  {
+    # Include all debug symbols that start with `remoting`.
+    'filename': 'remoting*.debug',
+    'arch': ['64bit'],
+    'buildtype': ['dev', 'official'],
+    'archive': 'remoting-debug-info.zip',
+  },
   # Breakpad symbols:
   {
     'filename': 'chrome.breakpad.x64',