Changed the extension.connect() API not to broadcast to all tabs. Added a

chrome/browser/extensions/extension_process_manager.cc

Index: chrome/browser/extensions/extension_process_manager.cc
diff --git a/chrome/browser/extensions/extension_process_manager.cc b/chrome/browser/extensions/extension_process_manager.cc
index 3018ea87a3585d2ae3e1efac5509eed0ac582cc0..57b969bd27cc9c2fd5525811027752790a6d72d0 100644
--- a/chrome/browser/extensions/extension_process_manager.cc
+++ b/chrome/browser/extensions/extension_process_manager.cc
@@ -85,7 +85,7 @@ ExtensionHost* ExtensionProcessManager::CreateBackgroundHost(
 }
 
 void ExtensionProcessManager::RegisterExtensionProcess(
-    std::string extension_id, int process_id) {
+    const std::string& extension_id, int process_id) {
   ProcessIDMap::const_iterator it = process_ids_.find(extension_id);
   if (it != process_ids_.end() && (*it).second == process_id)
     return;
@@ -117,6 +117,17 @@ void ExtensionProcessManager::UnregisterExtensionProcess(int process_id) {
   }
 }
 
+RenderProcessHost* ExtensionProcessManager::GetExtensionProcess(
+    const std::string& extension_id) {
+  ProcessIDMap::const_iterator it = process_ids_.find(extension_id);
+  if (it == process_ids_.end())
+    return NULL;
+
+  RenderProcessHost* rph = RenderProcessHost::FromID(it->second);
+  DCHECK(rph) << "We should have unregistered this host.";
+  return rph;
+}
+
 SiteInstance* ExtensionProcessManager::GetSiteInstanceForURL(const GURL& url) {
   return browsing_instance_->GetSiteInstanceForURL(url);
 }