IPC fuzzer child process component

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 380aa2af72c5514cb2d7b29bf21dbac1b9d9d6fa..733e6df3c3022a012e81f281e4d3790ad90ddcb1 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -1343,6 +1343,11 @@ void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
   if (browser_command_line.HasSwitch(switches::kChromeFrame))
     command_line->AppendSwitch(switches::kChromeFrame);
 
+#if defined(ENABLE_IPC_FUZZER)
+  command_line->CopySwitchFrom(browser_command_line,
+                               switches::kIpcFuzzerTestcase);
+#endif
+
   if (process_type == switches::kRendererProcess) {
     base::FilePath user_data_dir =
         browser_command_line.GetSwitchValuePath(switches::kUserDataDir);
@@ -2432,6 +2437,16 @@ void ChromeContentBrowserClient::GetAdditionalFileSystemBackends(
   additional_backends->push_back(new sync_file_system::SyncFileSystemBackend());
 }
 
+bool ChromeContentBrowserClient::ShouldKillChildProcessOnBadMessage() {
+#if defined(ENABLE_IPC_FUZZER)
+  // Don't kill the IPC fuzzer process, if it sends a bad message.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kIpcFuzzerTestcase))
+    return false;
+#endif
+
+  return true;
+}
+
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 void ChromeContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
     const CommandLine& command_line,