Fix check license on some android builders

This fixes mips, x86, x64 android builders.
Exclude mips and i386 sysroots as well in addition to arm.
Exclude an internal-only repo under remoting.

Review URL: https://codereview.chromium.org/1414663007

Cr-Commit-Position: refs/heads/master@{#356315}

tools/copyright_scanner/copyright_scanner.py

@@ -68,8 +68,10 @@ def FindFiles(input_api, root_dir, start_paths_list, excluded_dirs_list):
     path_join('tools', 'histograms'),
     # Swarming tools, doesn't exist in the snapshot
     path_join('tools', 'swarming_client'),
-    # ARM sysroot, doesn't exist in the snapshot
+    # Ignore sysroots.
     path_join('build', 'linux', 'debian_wheezy_arm-sysroot'),
+    path_join('build', 'linux', 'debian_wheezy_mips-sysroot'),
+    path_join('build', 'linux', 'debian_wheezy_i386-sysroot'),
     # Old location (TODO(sbc): Remove this once it no longer exists on any bots)
     path_join('chrome', 'installer', 'linux', 'debian_wheezy_arm-sysroot'),
     # Data is not part of open source chromium, but are included on some bots.
@@ -78,6 +80,8 @@ def FindFiles(input_api, root_dir, start_paths_list, excluded_dirs_list):
     path_join('skia', 'tools', 'clusterfuzz-data'),
     # Not shipped, only relates to Chrome for Android, but not to WebView
     path_join('clank'),
+    # Internal-only repository.
+    path_join('remoting', 'android', 'internal'),
   ]
   excluded_dirs_list.extend(EXTRA_EXCLUDED_DIRS)