[RDHI] Refactored blocked_loaders_map_ to key by render frame route id

content/browser/loader/global_routing_id.h

Index: content/browser/loader/global_routing_id.h
diff --git a/content/browser/loader/global_routing_id.h b/content/browser/loader/global_routing_id.h
index df5f202c22e568612508915e54f9fa4d753d83a9..3f5aadf94c05c8a461bd05e97472f85226961eb9 100644
--- a/content/browser/loader/global_routing_id.h
+++ b/content/browser/loader/global_routing_id.h
@@ -7,6 +7,8 @@
 
 #include <tuple>
 
+#include "ipc/ipc_message.h"
+
 namespace content {
 
 // Uniquely identifies the route from which a net::URLRequest comes.
@@ -38,6 +40,33 @@ struct GlobalRoutingID {
   }
 };
 
+// Same as GlobalRoutingID except the route_id must be a RenderFrameHost routing
+// id.
+struct GlobalFrameRoutingId {
+  GlobalFrameRoutingId() : child_id(0), frame_routing_id(MSG_ROUTING_NONE) {}
+
+  GlobalFrameRoutingId(int child_id, int frame_routing_id)
+      : child_id(child_id), frame_routing_id(frame_routing_id) {}
+
+  // The unique ID of the child process (different from OS's PID).
+  int child_id;
+
+  // The route ID (unique for each URLRequest source).
+  int frame_routing_id;
+
+  bool operator<(const GlobalFrameRoutingId& other) const {
+    return std::tie(child_id, frame_routing_id) <
+           std::tie(other.child_id, other.frame_routing_id);
+  }
+  bool operator==(const GlobalFrameRoutingId& other) const {
+    return child_id == other.child_id &&
+           frame_routing_id == other.frame_routing_id;
+  }
+  bool operator!=(const GlobalFrameRoutingId& other) const {
+    return !(*this == other);
+  }
+};
+
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_GLOBAL_ROUTING_ID_H_