Make application shortcuts point to app_host.exe, install App Host during app installation.

chrome/browser/extensions/unpacked_installer.cc

Index: chrome/browser/extensions/unpacked_installer.cc
diff --git a/chrome/browser/extensions/unpacked_installer.cc b/chrome/browser/extensions/unpacked_installer.cc
index 17c738af73e084b95dabe176e7ce639f911ccff0..461471b73a921adc8a7e5db26aeaad336f1f9835 100644
--- a/chrome/browser/extensions/unpacked_installer.cc
+++ b/chrome/browser/extensions/unpacked_installer.cc
@@ -9,6 +9,7 @@
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "base/threading/thread_restrictions.h"
+#include "chrome/browser/extensions/app_host_installer.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_prefs.h"
@@ -17,7 +18,9 @@
 #include "chrome/browser/extensions/requirements_checker.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_file_util.h"
+#include "grit/generated_resources.h"
 #include "sync/api/string_ordinal.h"
+#include "ui/base/l10n/l10n_util.h"
 
 using content::BrowserThread;
 using extensions::Extension;
@@ -32,7 +35,8 @@ class SimpleExtensionLoadPrompt : public ExtensionInstallPrompt::Delegate {
  public:
   SimpleExtensionLoadPrompt(Profile* profile,
                             base::WeakPtr<ExtensionService> extension_service,
-                            const Extension* extension);
+                            const Extension* extension,
+                            const base::Closure& callback);
   ~SimpleExtensionLoadPrompt();
 
   void ShowPrompt();
@@ -45,14 +49,17 @@ class SimpleExtensionLoadPrompt : public ExtensionInstallPrompt::Delegate {
   base::WeakPtr<ExtensionService> service_weak_;
   scoped_ptr<ExtensionInstallPrompt> install_ui_;
   scoped_refptr<const Extension> extension_;
+  const base::Closure& callback_;
 };
 
 SimpleExtensionLoadPrompt::SimpleExtensionLoadPrompt(
     Profile* profile,
     base::WeakPtr<ExtensionService> extension_service,
-    const Extension* extension)
+    const Extension* extension,
+    const base::Closure& callback)
     : service_weak_(extension_service),
-      extension_(extension) {
+      extension_(extension),
+      callback_(callback) {
   install_ui_.reset(
       ExtensionInstallUI::CreateInstallPromptWithProfile(profile));
 }
@@ -66,12 +73,7 @@ void SimpleExtensionLoadPrompt::ShowPrompt() {
 
 void SimpleExtensionLoadPrompt::InstallUIProceed() {
   if (service_weak_.get()) {
-    extensions::PermissionsUpdater perms_updater(service_weak_->profile());
-    perms_updater.GrantActivePermissions(extension_, false);
-    service_weak_->OnExtensionInstalled(
-        extension_,
-        syncer::StringOrdinal(),
-        false /* no requirement errors */);
+    callback_.Run();
   }
   delete this;
 }
@@ -253,11 +255,32 @@ void UnpackedInstaller::OnLoaded() {
     SimpleExtensionLoadPrompt* prompt = new SimpleExtensionLoadPrompt(
         service_weak_->profile(),
         service_weak_,
-        extension_);
+        extension_,
+        base::Bind(&UnpackedInstaller::BeginInstall, this));
     prompt->ShowPrompt();
     return;  // continues in SimpleExtensionLoadPrompt::InstallPrompt*
   }
+  BeginInstall();
+}
+
+void UnpackedInstaller::BeginInstall() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  app_host_installer_.InstallAppHostIfNecessary(*extension_,
+      base::Bind(&UnpackedInstaller::OnAppHostInstallation, this));
+}
+
+void UnpackedInstaller::OnAppHostInstallation(bool success) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  if (!success) {
+    UnpackedInstaller::ReportExtensionLoadError(
+        l10n_util::GetStringUTF8(IDS_EXTENSION_APP_HOST_INSTALL_ERROR));
+    return;
+  }
+  CompleteInstall();
+}
 
+void UnpackedInstaller::CompleteInstall() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   PermissionsUpdater perms_updater(service_weak_->profile());
   perms_updater.GrantActivePermissions(extension_, false);
   service_weak_->OnExtensionInstalled(extension_,