Ignore exceptions when writing breakpad symbols

There's not much we can do about this, and ignoring the exception is
better than hanging the thread.

The minidump_stackwalk binary will just ignore modules for which it
can't find symbols so not having some symbols isn't tragic.

BUG=none
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/294203002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272423 0039d316-1c4b-4281-b951-d872f2087c98

components/breakpad/tools/generate_breakpad_symbols.py

@@ -178,9 +178,14 @@ def GenerateSymbols(options, binaries):
                                  module_line.group(1))
       mkdir_p(output_path)
       symbol_file = "%s.sym" % module_line.group(2)
-      f = open(os.path.join(output_path, symbol_file), 'w')
-      f.write(syms)
-      f.close()
+      try:
+        f = open(os.path.join(output_path, symbol_file), 'w')
+        f.write(syms)
+        f.close()
+      except Exception, e:
+        # Not much we can do about this.
+        with print_lock:
+          print e
 
       queue.task_done()