Plumbing devtools agent host id and request id between processes

third_party/WebKit/Source/core/inspector/IdentifiersFactory.cpp

Index: third_party/WebKit/Source/core/inspector/IdentifiersFactory.cpp
diff --git a/third_party/WebKit/Source/core/inspector/IdentifiersFactory.cpp b/third_party/WebKit/Source/core/inspector/IdentifiersFactory.cpp
index 4ade71c32b6a51501765b9c4dc4f732300d27c9d..407b0f1037288ce90b63036f5736fbab111afa11 100644
--- a/third_party/WebKit/Source/core/inspector/IdentifiersFactory.cpp
+++ b/third_party/WebKit/Source/core/inspector/IdentifiersFactory.cpp
@@ -49,6 +49,15 @@ String IdentifiersFactory::createIdentifier() {
 
 // static
 String IdentifiersFactory::requestId(unsigned long identifier) {
+  // Odd request Ids are set by the browser.  For those we use a PID of 0
+  // because for browser side navigations the PID may not be known when an event
+  // is sent because the renderer hasn't been created yet.
+  if (identifier & 1) {
+    StringBuilder builder;
+    builder.append("0.");
+    builder.appendNumber(identifier);
+    return builder.toString();
+  }
   return identifier ? addProcessIdPrefixTo(identifier) : String();
 }