linux: enable crashpad

This change disables Breakpad and enables Crashpad for Chrome_Linux. It
should not affect other embedders or Chrome_ChromeOS.

Change-Id: I7017f1c6530fe58235e7ce955051b5b469e75244
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1958693
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Cr-Commit-Position: refs/heads/master@{#724394}

chrome/app/chrome_main.cc

@@ -18,6 +18,10 @@
 #include "headless/public/headless_shell.h"
 #include "ui/gfx/switches.h"
 
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+#include "components/crash/content/app/crashpad.h"
+#endif
+
 #if defined(OS_MACOSX)
 #include "chrome/app/chrome_main_mac.h"
 #endif
@@ -107,6 +111,13 @@ int ChromeMain(int argc, const char** argv) {
   }
 #endif  // defined(OS_LINUX) || defined(OS_MACOSX) || defined(OS_WIN)
 
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  // TODO(https://crbug.com/942279): This can be removed when Chrome_ChromeOS
+  // and other embedders on Chrome OS and Linux are ready to use Crashpad.
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      crash_reporter::kEnableCrashpad);
+#endif
+
   int rv = content::ContentMain(params);
 
   return rv;