Add a flag to let render process wait for java debugger

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index f1e9b613cca16814b297e41fe0851b95a04568aa..8b999b0c1351f42e00014012359d9a9d974b395b 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -892,6 +892,10 @@ const char kNetworkCountryIso[] = "network-country-iso";
 
 // Enables remote debug over HTTP on the specified socket name.
 const char kRemoteDebuggingSocketName[]     = "remote-debugging-socket-name";
+
+// Block ChildProcessMain thread of the renderer's ChildProcessService until a
+// Java debugger is attached.
+const char kRendererWaitForJavaDebugger[] = "renderer-wait-for-java-debugger";
 #endif
 
 // Disable web audio API.