Break extensions ProcessManager dependency on Runtime API

extensions/browser/process_manager.cc

Index: extensions/browser/process_manager.cc
diff --git a/extensions/browser/process_manager.cc b/extensions/browser/process_manager.cc
index 2146969106028018a415d13792e5122da024664f..a33a948d0da5c35ac47ff787e7ecb2f374868ac6 100644
--- a/extensions/browser/process_manager.cc
+++ b/extensions/browser/process_manager.cc
@@ -14,7 +14,6 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/extensions/api/runtime/runtime_api.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/devtools_agent_host.h"
@@ -33,6 +32,7 @@
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/extensions_browser_client.h"
+#include "extensions/browser/process_manager_observer.h"
 #include "extensions/browser/view_type_utils.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_messages.h"
@@ -282,6 +282,14 @@ const ProcessManager::ViewSet ProcessManager::GetAllViews() const {
   return result;
 }
 
+void ProcessManager::AddObserver(ProcessManagerObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void ProcessManager::RemoveObserver(ProcessManagerObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
 bool ProcessManager::CreateBackgroundHost(const Extension* extension,
                                           const GURL& url) {
   // Hosted apps are taken care of from BackgroundContentsService. Ignore them
@@ -771,8 +779,9 @@ void ProcessManager::CreateBackgroundHostsForProfileStartup() {
        ++extension) {
     CreateBackgroundHostForExtensionLoad(this, extension->get());
 
-    RuntimeEventRouter::DispatchOnStartupEvent(GetBrowserContext(),
-                                               (*extension)->id());
+    FOR_EACH_OBSERVER(ProcessManagerObserver,
+                      observer_list_,
+                      OnBackgroundHostStartup(*extension));
   }
   startup_background_hosts_created_ = true;