Reland "Add remoting Linux debug symbols to the upload list"

This is a reland of dbe36b16

Original change's description:
> 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/+/2462547
> Reviewed-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}

Bug: 1136663
Change-Id: I9dce6bc57a57c7729365045fb0d99cf2e50cba37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466498Reviewed-by: Michael Moss <mmoss@chromium.org>
Commit-Queue: Yuwei Huang <yuweih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816245}

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': ['official'],
+    'archive': 'remoting-debug-info.zip',
+  },
+  {
+    # Include all debug symbols that start with `remoting`.
+    'filename': 'remoting*.debug',
+    'arch': ['64bit'],
+    'buildtype': ['official'],
+    'archive': 'remoting-debug-info.zip',
+  },
   # Breakpad symbols:
   {
     'filename': 'chrome.breakpad.x64',