Add a force pipelining option to load flags.

net/http/http_pipelined_host.h

Index: net/http/http_pipelined_host.h
diff --git a/net/http/http_pipelined_host.h b/net/http/http_pipelined_host.h
index 14c0f098f85e0cf6602c603f54993e618ac7a799..4fea60dc728e60f812400a2857812c870468124e 100644
--- a/net/http/http_pipelined_host.h
+++ b/net/http/http_pipelined_host.h
@@ -6,6 +6,7 @@
 #define NET_HTTP_HTTP_PIPELINED_HOST_H_
 #pragma once
 
+#include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/http/http_pipelined_connection.h"
 #include "net/http/http_pipelined_host_capability.h"
@@ -28,6 +29,23 @@ struct SSLConfig;
 // assigns requests to the least loaded pipelined connection.
 class NET_EXPORT_PRIVATE HttpPipelinedHost {
  public:
+  class Key {

[mmenke, 2012/02/23 18:54:58]

Doesn't look to me like any of the unit tests beat on this class a whole lot. 
Sure, it's pretty simple, but best to be careful.  Maybe a test with multiple
pipelines for HttpPipelinedHostPool?  Might be a good idea to have a test that
does that, anyways.

[James Simonsen, 2012/02/23 23:49:46]

Good point. Done.

+   public:
+    Key(const HostPortPair& origin, bool force_pipelining);
+
+    // The host and port associated with this key.
+    const HostPortPair& origin() const { return origin_; }
+
+    // True if this key forces requests to pipeline.
+    bool force_pipelining() const { return force_pipelining_; }
+
+    bool operator<(const Key& rhs) const;
+
+   private:
+    const HostPortPair origin_;
+    bool force_pipelining_;
+  };
+
   class Delegate {
    public:
     // Called when a pipelined host has no outstanding requests on any of its
@@ -50,7 +68,7 @@ class NET_EXPORT_PRIVATE HttpPipelinedHost {
 
     // Returns a new HttpPipelinedHost.
     virtual HttpPipelinedHost* CreateNewHost(
-        Delegate* delegate, const HostPortPair& origin,
+        Delegate* delegate, const Key& key,
         HttpPipelinedConnection::Factory* factory,
         HttpPipelinedHostCapability capability) = 0;
   };
@@ -75,13 +93,12 @@ class NET_EXPORT_PRIVATE HttpPipelinedHost {
   // requests.
   virtual bool IsExistingPipelineAvailable() const = 0;
 
-  // Returns the host and port associated with this class.
-  virtual const HostPortPair& origin() const = 0;
+  // Returns a Key that uniquely identifies this host.
+  virtual const Key& key() const = 0;
 
   // Creates a Value summary of this host's pipelines. Caller assumes
   // ownership of the returned Value.
   virtual base::Value* PipelineInfoToValue() const = 0;
-
 };
 
 }  // namespace net