Add code to prompt for browser login during app notification setup

chrome/browser/extensions/app_notify_channel_setup.cc

Index: chrome/browser/extensions/app_notify_channel_setup.cc
diff --git a/chrome/browser/extensions/app_notify_channel_setup.cc b/chrome/browser/extensions/app_notify_channel_setup.cc
index f548ce95d136604cc98c06464d6932d4b39f5c34..e990e1a19970d464660b41a72e9ce200b9565914 100644
--- a/chrome/browser/extensions/app_notify_channel_setup.cc
+++ b/chrome/browser/extensions/app_notify_channel_setup.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/extensions/app_notify_channel_setup.h"
 
+#include "base/bind.h"
 #include "base/command_line.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ -20,13 +21,15 @@ AppNotifyChannelSetup::AppNotifyChannelSetup(
     const GURL& requestor_url,
     int return_route_id,
     int callback_id,
+    AppNotifyChannelUI* ui,
     base::WeakPtr<AppNotifyChannelSetup::Delegate> delegate)
     : profile_(profile),
       client_id_(client_id),
       requestor_url_(requestor_url),
       return_route_id_(return_route_id),
       callback_id_(callback_id),
-      delegate_(delegate) {}
+      delegate_(delegate),
+      ui_(ui) {}
 
 AppNotifyChannelSetup::~AppNotifyChannelSetup() {}
 
@@ -52,24 +55,51 @@ static GURL GetChannelServerURL() {
 void AppNotifyChannelSetup::Start() {
   AddRef(); // Balanced in ReportResult.
 
-  GURL channel_server_url = GetChannelServerURL();
-
   // Check if the user is logged in to the browser.
   std::string username = profile_->GetPrefs()->GetString(
       prefs::kGoogleServicesUsername);
 
-  // TODO(asargent) - If the user is not logged in, we'd like to prompt for
-  // login and if then they sign in, continue as normal. But for now just return
-  // an error. We do this via PostTask instead of immediately calling back the
+  if (username.empty()) {
+    ui_->PromptSyncSetup(this);
+    return; // We'll get called back in OnSyncSetupResult
+  }
+
+  BeginFetch();
+}
+
+void AppNotifyChannelSetup::OnURLFetchComplete(
+    const content::URLFetcher* source) {
+  CHECK(source);
+  net::URLRequestStatus status = source->GetStatus();
+
+  if (status.status() == net::URLRequestStatus::SUCCESS &&
+      source->GetResponseCode() == 200) {
+    // TODO(asargent) - we need to parse the response from |source| here.
+    ReportResult("dummy_do_not_use", "");
+  } else {
+    ReportResult("", "channel_service_error");
+  }
+}
+
+void AppNotifyChannelSetup::OnSyncSetupResult(bool enabled) {
+  if (enabled) {
+    BeginFetch();
+  } else {
+    ReportResult("", "not_available");
+  }
+}
+
+void AppNotifyChannelSetup::BeginFetch() {
+  GURL channel_server_url = GetChannelServerURL();
+
+  // We return the error via PostTask instead of immediately calling back the
   // delegate because it simplifies tests.
-  if (!channel_server_url.is_valid() || username.empty()) {
+  if (!channel_server_url.is_valid()) {
     BrowserThread::PostTask(
         BrowserThread::UI,
         FROM_HERE,
-        NewRunnableMethod(this,
-                          &AppNotifyChannelSetup::ReportResult,
-                          std::string(),
-                          std::string("not_available")));
+        base::Bind(&AppNotifyChannelSetup::ReportResult, this,
+                   std::string(), std::string("not_available")));
     return;
   }
 
@@ -85,20 +115,6 @@ void AppNotifyChannelSetup::Start() {
   url_fetcher_->Start();
 }
 
-void AppNotifyChannelSetup::OnURLFetchComplete(
-    const content::URLFetcher* source) {
-  CHECK(source);
-  net::URLRequestStatus status = source->GetStatus();
-
-  if (status.status() == net::URLRequestStatus::SUCCESS &&
-      source->GetResponseCode() == 200) {
-    // TODO(asargent) - we need to parse the response from |source| here.
-    ReportResult("dummy_do_not_use", "");
-  } else {
-    ReportResult("", "channel_service_error");
-  }
-}
-
 void AppNotifyChannelSetup::ReportResult(
     const std::string& channel_id,
     const std::string& error) {