Remove a chrome dependency by removing Prerender from ResourceDispatcherHost.

chrome/browser/renderer_host/resource_dispatcher_host_observer.h

Index: chrome/browser/renderer_host/resource_dispatcher_host_observer.h
diff --git a/chrome/browser/renderer_host/resource_dispatcher_host_observer.h b/chrome/browser/renderer_host/resource_dispatcher_host_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..6affcfa983f6684bbf1370313614bac259be4a3f
--- /dev/null
+++ b/chrome/browser/renderer_host/resource_dispatcher_host_observer.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_OBSERVER_H_
+#define CHROME_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_OBSERVER_H_
+#pragma once
+
+#include "content/browser/renderer_host/resource_dispatcher_host.h"
+
+class PrerenderManager;
+
+class ResourceDispatcherHostObserver : public ResourceDispatcherHost::Observer {

[jam, 2011/05/24 16:06:24]

sorry I realize I suggested ResourceDispatcherHostObserver, but now looking at
it it's a little confusing having both ResourceDispatcherHostObserver and
ResourceDispatcherHost::Observer.  How about
ChromeResourceDispatcherHostObserver?  We have been using the Chrome prefix for
classes that the embedder provides to the content layer.

[dominich, 2011/05/24 16:54:21]

Done.

+ public:
+  ResourceDispatcherHostObserver();
+  virtual ~ResourceDispatcherHostObserver();
+
+  // ResourceDispatcherHost::Observer implementation.
+  virtual bool ShouldBeginRequest(
+      int child_id, int route_id,
+      const ResourceHostMsg_Request& request_data,
+      const content::ResourceContext& resource_context,
+      const GURL& referrer) OVERRIDE;
+
+  virtual void MutateLoadFlags(int child_id, int route_id,
+                               int* load_flags) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostObserver);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_OBSERVER_H_