Delegate decision what site instances can be rendered in what process to chrome

content/browser/renderer_host/render_process_host.h

 // 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_
 #pragma once
 
 #include <set>
 
@@ skipping 14 matching lines @@
 }
 
 namespace content {
 class BrowserContext;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
 
+class GURL;
+
 // Virtual interface that represents the browser side of the browser <->
 // renderer communication channel. There will generally be one
 // RenderProcessHost per renderer process.
 //
 // The concrete implementation of this class for normal use is the
 // BrowserRenderProcessHost. It may also be implemented by a testing interface
 // for mocking purposes.
 class CONTENT_EXPORT RenderProcessHost : public IPC::Channel::Sender,
                                          public IPC::Channel::Listener {
  public:
   typedef IDMap<RenderProcessHost>::iterator iterator;
 
-  // We classify renderers according to their highest privilege, and try
-  // to group pages into renderers with similar privileges.
-  // Note: it may be possible for a renderer to have multiple privileges,
-  // in which case we call it an "extension" renderer.
-  enum Type {
-    TYPE_NORMAL,     // Normal renderer, no extra privileges.
-    TYPE_WEBUI,      // Renderer with WebUI privileges, like New Tab.
-    TYPE_EXTENSION,  // Renderer with extension privileges.
-  };
-
   // Details for RENDERER_PROCESS_CLOSED notifications.
   struct RendererClosedDetails {
     RendererClosedDetails(base::TerminationStatus status,
                           int exit_code,
                           bool was_extension_renderer) {
       this->status = status;
       this->exit_code = exit_code;
       this->was_extension_renderer = was_extension_renderer;
     }
     base::TerminationStatus status;
@@ skipping 200 matching lines @@
   // Returns the RenderProcessHost given its ID.  Returns NULL if the ID does
   // not correspond to a live RenderProcessHost.
   static RenderProcessHost* FromID(int render_process_id);
 
   // Returns true if the caller should attempt to use an existing
   // RenderProcessHost rather than creating a new one.
   static bool ShouldTryToUseExistingProcessHost();
 
   // Get an existing RenderProcessHost associated with the given browser
   // context, if possible.  The renderer process is chosen randomly from
-  // suitable renderers that share the same context and type.
+  // suitable renderers that share the same context and type (determined by the
+  // site url).
   // Returns NULL if no suitable renderer process is available, in which case
   // the caller is free to create a new renderer.
   static RenderProcessHost* GetExistingProcessHost(
-      content::BrowserContext* browser_context, Type type);
+      content::BrowserContext* browser_context, const GURL& site_url);
 
   // Overrides the default heuristic for limiting the max renderer process
   // count.  This is useful for unit testing process limit behaviors.
   // A value of zero means to use the default heuristic.
   static void SetMaxRendererProcessCount(size_t count);
 
  protected:
   // A proxy for our IPC::Channel that lives on the IO thread (see
   // browser_process.h)
   scoped_ptr<IPC::ChannelProxy> channel_;
@@ skipping 53 matching lines @@
 // Factory object for RenderProcessHosts. Using this factory allows tests to
 // swap out a different one to use a TestRenderProcessHost.
 class RenderProcessHostFactory {
  public:
   virtual ~RenderProcessHostFactory() {}
   virtual RenderProcessHost* CreateRenderProcessHost(
       content::BrowserContext* browser_context) const = 0;
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_