Plumbing devtools agent host id and request id between processes

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

Index: third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
index 1474b15528a3f1c9657f46426e4497ff1fe27f00..0f94ca866c75b38e83969c6039cde6ff6d7c6624 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
@@ -693,11 +693,18 @@ void InspectorNetworkAgent::willSendRequest(
   willSendRequestInternal(frame, identifier, loader, request, redirectResponse,
                           initiatorInfo);
 
-  if (!m_hostId.isEmpty())
+  request.setDevToolsAgentHostId(m_hostId);
+  request.setDevToolsRequestId(IdentifiersFactory::requestId(identifier));
+
+  if (!m_hostId.isEmpty()) {
+    // TODO(alexclarke): Merge throttling in with request interception so we can
+    // stop setting this header.
     request.addHTTPHeaderField(
         HTTPNames::X_DevTools_Emulate_Network_Conditions_Client_Id,
         AtomicString(m_hostId));
+  }
 
+  // TODO(alexclarke): Remove this.
   request.setHTTPHeaderField(
       HTTPNames::X_DevTools_Request_Id,
       AtomicString(IdentifiersFactory::requestId(identifier)));