Make chrome/common pass "gn check"

chrome/common/crash_keys.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/crash_keys.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/chrome_switches.h"
 #include "content/public/common/content_switches.h"
 #include "ipc/ipc_switches.h"
 
+// Breakpad dependencies exist only on Windows and Mac desktop. Exclude them
+// from "gn check" to avoid failures on Linux (it doesn't understand ifdefs).
 #if defined(OS_MACOSX)
-#include "breakpad/src/common/simple_string_dictionary.h"
+#include "breakpad/src/common/simple_string_dictionary.h"  // nogncheck
 #elif defined(OS_WIN)
-#include "breakpad/src/client/windows/common/ipc_protocol.h"
+#include "breakpad/src/client/windows/common/ipc_protocol.h"  // nogncheck
 #elif defined(OS_CHROMEOS)
 #include "chrome/common/chrome_switches.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "ui/gl/gl_switches.h"
 #endif
 
 namespace crash_keys {
 
 // The maximum lengths specified by breakpad include the trailing NULL, so
 // the actual length of the string is one less.
@@ skipping 324 matching lines @@
 }
 
 ScopedPrinterInfo::~ScopedPrinterInfo() {
   for (size_t i = 0; i < kPrinterInfoCount; ++i) {
     std::string key = base::StringPrintf(kPrinterInfo, i + 1);
     base::debug::ClearCrashKey(key);
   }
 }
 
 }  // namespace crash_keys