win: Implement and use ScopedProcessSuspend

tools/generate_dump.cc

Index: tools/generate_dump.cc
diff --git a/tools/generate_dump.cc b/tools/generate_dump.cc
index 5da9f044196073ef0142c875f0000706fb3c238e..f68c17c2a068be8a356d2fb29d41a45711d11106 100644
--- a/tools/generate_dump.cc
+++ b/tools/generate_dump.cc
@@ -41,6 +41,7 @@
 #elif defined(OS_WIN)
 #include "base/strings/utf_string_conversions.h"
 #include "snapshot/win/process_snapshot_win.h"
+#include "util/win/scoped_process_suspend.h"
 #endif  // OS_MACOSX
 
 namespace crashpad {
@@ -168,9 +169,9 @@ int GenerateDumpMain(int argc, char* argv[]) {
       suspend.reset(new ScopedTaskSuspend(task));
     }
 #elif defined(OS_WIN)
+    scoped_ptr<ScopedProcessSuspend> suspend;
     if (options.suspend) {
-      LOG(ERROR) << "TODO(scottmg): --no-suspend is required for now.";
-      return EXIT_FAILURE;
+      suspend.reset(new ScopedProcessSuspend(process.get()));
     }
 #endif  // OS_MACOSX