Display extension processes in task manager.

This is the first part of the change. I will submit code to listen
for new extension processes while task manager is open in following patch(es).

TEST=Install an extension which renders to the extension shelf, like Buildbot Monitor from http://dev.chromium.org/developers/design-documents/extensions/samples. Open the task manager. You should see the extension process.

http://crbug.com/12127

Review URL: http://codereview.chromium.org/115858

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17826 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 10 insertions, 1 deletions

diff --git a/chrome/browser/extensions/extension_host.cc b/chrome/browser/extensions/extension_host.cc
index 9509577..c9eeda8 100644
--- a/chrome/browser/extensions/extension_host.cc
+++ b/chrome/browser/extensions/extension_host.cc
@@ -10,6 +10,7 @@
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/extensions/extension_message_service.h"
+#include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_view.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
@@ -28,8 +29,10 @@
 
 #include "webkit/glue/context_menu.h"
 
-ExtensionHost::ExtensionHost(Extension* extension, SiteInstance* site_instance)
+ExtensionHost::ExtensionHost(Extension* extension, SiteInstance* site_instance,
+                             ExtensionProcessManager* manager)
     : extension_(extension),
+      manager_(manager),
 #if defined(OS_WIN)
       view_(NULL),
 #endif
@@ -40,9 +43,15 @@ ExtensionHost::ExtensionHost(Extension* extension, SiteInstance* site_instance)
 }
 
 ExtensionHost::~ExtensionHost() {
+  if (manager_)  // To allow passing NULL in tests.
+    manager_->OnExtensionHostDestroyed(this);
   render_view_host_->Shutdown();  // deletes render_view_host
 }
 
+RenderProcessHost* ExtensionHost::render_process_host() const {
+  return render_view_host_->process();
+}
+
 SiteInstance* ExtensionHost::site_instance() const {
   return render_view_host_->site_instance();
 }