Make Crashpad start asynchronous, and move back to chrome_elf

components/crash/content/app/crashpad.cc

Index: components/crash/content/app/crashpad.cc
diff --git a/components/crash/content/app/crashpad.cc b/components/crash/content/app/crashpad.cc
index 76f67348ab0fcb6cd0e7ed3412a410d31be569da..a0eabba349246f0540a88cf0a5b260f1b3e65c04 100644
--- a/components/crash/content/app/crashpad.cc
+++ b/components/crash/content/app/crashpad.cc
@@ -335,6 +335,13 @@ void __declspec(dllexport)
     RequestSingleCrashUploadImpl(const std::string& local_id) {
   crash_reporter::RequestSingleCrashUpload(local_id);
 }
+
+// This helper is invoked by code in chrome.dll to wait for the handler start to
+// complete.
+void __declspec(dllexport) BlockUntilHandlerStartedImpl() {
+  crash_reporter::BlockUntilHandlerStarted();
+}
+
 }  // extern "C"
 
 #endif  // OS_WIN