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

content/browser/renderer_host/render_process_host.cc

 // 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.
 
 #include "content/browser/renderer_host/render_process_host.h"
 
 #include "base/command_line.h"
 #include "base/rand_util.h"
 #include "base/sys_info.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/child_process_security_policy.h"
+#include "content/browser/content_browser_client.h"
+#include "content/browser/webui/web_ui_factory.h"
 #include "content/common/child_process_info.h"
+#include "content/common/content_client.h"
 #include "content/common/content_constants.h"
 #include "content/common/content_switches.h"
 #include "content/common/notification_service.h"
 
 namespace {
 
 size_t max_renderer_count_override = 0;
 
 size_t GetMaxRendererProcessCount() {
   if (max_renderer_count_override)
@@ skipping 30 matching lines @@
   if (!max_count) {
     size_t memory_tier = base::SysInfo::AmountOfPhysicalMemoryMB() / 256;
     if (memory_tier >= arraysize(kMaxRenderersByRamTier))
       max_count = content::kMaxRendererProcessCount;
     else
       max_count = kMaxRenderersByRamTier[memory_tier];
   }
   return max_count;
 }
 
-// Returns true if the given host is suitable for launching a new view
-// associated with the given browser context.
-static bool IsSuitableHost(RenderProcessHost* host,
-                           content::BrowserContext* browser_context,
-                           RenderProcessHost::Type type) {
-  if (host->browser_context() != browser_context)
-    return false;
-
-  RenderProcessHost::Type host_type = RenderProcessHost::TYPE_NORMAL;
-  if (ChildProcessSecurityPolicy::GetInstance()->HasWebUIBindings(host->id()))
-    host_type = RenderProcessHost::TYPE_WEBUI;
-  if (ChildProcessSecurityPolicy::GetInstance()->
-        HasExtensionBindings(host->id()) ||
-      host->is_extension_process())
-    host_type = RenderProcessHost::TYPE_EXTENSION;
-
-  return host_type == type;
-}
-
 // the global list of all renderer processes
 IDMap<RenderProcessHost> all_hosts;
 
 }  // namespace
 
 // static
 bool RenderProcessHost::run_renderer_in_process_ = false;
 
 // static
 void RenderProcessHost::SetMaxRendererProcessCount(size_t count) {
@@ skipping 120 matching lines @@
   //       a renderer process for a browser context that has no existing
   //       renderers. This is OK in moderation, since the
   //       GetMaxRendererProcessCount() is conservative.
 
   return run_renderer_in_process() ||
          (renderer_process_count >= GetMaxRendererProcessCount());
 }
 
 // static
 RenderProcessHost* RenderProcessHost::GetExistingProcessHost(
-    content::BrowserContext* browser_context, Type type) {
+    content::BrowserContext* browser_context,
+    const GURL& site_url) {
   // First figure out which existing renderers we can use.
   std::vector<RenderProcessHost*> suitable_renderers;
   suitable_renderers.reserve(all_hosts.size());
 
   iterator iter(AllHostsIterator());
   while (!iter.IsAtEnd()) {
     if (run_renderer_in_process() ||
-        IsSuitableHost(iter.GetCurrentValue(), browser_context, type))
+        (iter.GetCurrentValue()->browser_context() == browser_context &&
+         iter.GetCurrentValue()->IsSuitableHost(site_url)))
       suitable_renderers.push_back(iter.GetCurrentValue());
 
     iter.Advance();
   }
 
   // Now pick a random suitable renderer, if we have any.
   if (!suitable_renderers.empty()) {
     int suitable_count = static_cast<int>(suitable_renderers.size());
     int random_index = base::RandInt(0, suitable_count - 1);
     return suitable_renderers[random_index];
   }
 
   return NULL;
 }
+
+bool RenderProcessHost::IsSuitableHost(const GURL& site_url) {
+  if (ChildProcessSecurityPolicy::GetInstance()->HasWebUIBindings(id_) !=
+      content::WebUIFactory::Get()->HasWebUIScheme(site_url))
+    return false;
+  return true;
+}