Don't reuse the minidump descriptor for the crash signal pipe.

components/crash/content/app/breakpad_linux.cc

 // Copyright 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.
 
 // For linux_syscall_support.h. This makes it safe to call embedded system
 // calls when in seccomp mode.
 
 #include "components/crash/content/app/breakpad_linux.h"
 
 #include <fcntl.h>
@@ skipping 914 matching lines @@
     // generated dumps for WebView because we only know the file
     // descriptor to which we are dumping at the time of the call to
     // |DumpWithoutCrashing()|. Therefore we need to construct the
     // |MinidumpDescriptor| and |ExceptionHandler| instances as
     // needed, instead of setting up |g_breakpad| at initialization
     // time.
     base::debug::SetDumpWithoutCrashingFunction(
         &GenerateMinidumpOnDemandForAndroid);
   } else if (!process_type.empty()) {
     g_signal_code_pipe_fd =
-        GetCrashReporterClient()->GetAndroidMinidumpDescriptor();
+        GetCrashReporterClient()->GetAndroidCrashSignalFD();
     if (g_signal_code_pipe_fd != -1)
       g_microdump->set_crash_handler(WriteSignalCodeToPipe);
   }
 }
 
 #else
 // Non-Browser = Extension, Gpu, Plugins, Ppapi and Renderer
 class NonBrowserCrashHandler : public google_breakpad::CrashGenerationClient {
  public:
   NonBrowserCrashHandler()
@@ skipping 988 matching lines @@
     const std::string& gpu_fingerprint) {
   g_microdump_info.Get().SetGpuFingerprint(gpu_fingerprint);
 }
 #endif  // OS_ANDROID
 
 bool IsCrashReporterEnabled() {
   return g_is_crash_reporter_enabled;
 }
 
 }  // namespace breakpad