Move IPC fuzzer switches and helpers from chrome/common to content/common.

content/common/external_ipc_dumper.cc

 // Copyright (c) 2015 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 "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/native_library.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
-#include "chrome/common/external_ipc_dumper.h"
+#include "content/common/external_ipc_dumper.h"
+
+namespace {
 
 typedef IPC::ChannelProxy::OutgoingMessageFilter* (*GetFilterFunction)();
 typedef void (*SetDumpDirectoryFunction)(const base::FilePath&);
 
 const char kFilterEntryName[] = "GetFilter";
 const char kSetDumpDirectoryEntryName[] = "SetDumpDirectory";
 
 #if defined(OS_WIN)
 #define IPC_MESSAGE_DUMP_MODULE FILE_PATH_LITERAL("ipc_message_dump.dll")
 #else
 #define IPC_MESSAGE_DUMP_MODULE FILE_PATH_LITERAL("libipc_message_dump.so")
 #endif
 
+}  // namespace
+
+namespace content {
+
 IPC::ChannelProxy::OutgoingMessageFilter* LoadExternalIPCDumper(
     const base::FilePath& dump_directory) {
   base::FilePath module_path;
   if (!PathService::Get(base::DIR_MODULE, &module_path)) {
     LOG(ERROR) << "Unable to get message dump module directory.";
     return NULL;
   }
 
   base::FilePath library_path = module_path.Append(IPC_MESSAGE_DUMP_MODULE);
   base::NativeLibraryLoadError load_error;
@@ skipping 18 matching lines @@
 
   GetFilterFunction filter_entry_point = reinterpret_cast<GetFilterFunction>(
       base::GetFunctionPointerFromNativeLibrary(library, kFilterEntryName));
   if (!filter_entry_point) {
     LOG(ERROR) << kFilterEntryName << " not exported by message dump module.";
     return NULL;
   }
 
   return filter_entry_point();
 }
+
+}  // namespace content