Implement app banner info bars on desktop.

chrome/browser/banners/app_banner_infobar_delegate.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/banners/app_banner_infobar_delegate.h"
+
+#include "base/metrics/histogram.h"
+#include "base/strings/string16.h"
+#include "chrome/browser/banners/app_banner_data_fetcher.h"
+#include "chrome/browser/banners/app_banner_metrics.h"
+#include "chrome/browser/banners/app_banner_settings_helper.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/extensions/bookmark_app_helper.h"
+#include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/common/render_messages.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/infobars/core/infobar.h"
+#include "components/infobars/core/infobar_manager.h"
+#include "components/rappor/rappor_utils.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/web_contents.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace banners {
+
+AppBannerInfoBarDelegate::AppBannerInfoBarDelegate(
+    scoped_refptr<AppBannerDataFetcher> fetcher,
+    const content::Manifest& web_app_data,
+    extensions::BookmarkAppHelper* bookmark_app_helper,
+    int event_request_id)
+    : ConfirmInfoBarDelegate(),
+      fetcher_(fetcher),
+      web_app_data_(web_app_data),
+      bookmark_app_helper_(bookmark_app_helper),
+      event_request_id_(event_request_id) {
+}
+
+AppBannerInfoBarDelegate::~AppBannerInfoBarDelegate() { }
+
+// static
+infobars::InfoBar* AppBannerInfoBarDelegate::Create(
+    scoped_refptr<AppBannerDataFetcher> fetcher,
+    content::WebContents* web_contents,
+    const content::Manifest& web_app_data,
+    extensions::BookmarkAppHelper* bookmark_app_helper,
+    int event_request_id) {
+  InfoBarService* infobar_service =
+      InfoBarService::FromWebContents(web_contents);
+  return infobar_service->AddInfoBar(infobar_service->CreateConfirmInfoBar(

[benwells, 2015/06/02 05:53:35]

The way the banner is added is inconsistent between android and desktop. Here it
is done by infobar delegate, but for android it is done by the fetcher. I don't
have a strong opinion about which way it should be, but it should be consistent.

If you do it here, the function should probably be Show, not Create.

[dominickn (DO NOT USE), 2015/06/02 06:51:32]

I tried doing it consistently, and created an AppBannerInfoBar class for desktop
and called InfoBarService->AddInfoBar from the data fetcher. However, it crashed
with a segfault on ChromeOS in the views code, somewhere in determining the
widget required to display the banner.

The current inconsistency is a bit annoying, but there is a fair amount of
functionality in the AppBannerInfoBarAndroid class which communicates with Java,
whilst I found few instances of desktop infobars which were created in the same
way as the Android version. This is why I ended up implementing it like I did,
avoiding too much hacking on the Android side. Do you think it's worth further
work to make it fully consistent? This would probably require figuring out where
the Java-specific stuff in the AppBannerInfoBarAndroid should hook into (if it
can hook into somewhere else).

+      scoped_ptr<ConfirmInfoBarDelegate>(new AppBannerInfoBarDelegate(
+          fetcher, web_app_data, bookmark_app_helper, event_request_id))));
+}
+
+infobars::InfoBarDelegate::Type
+AppBannerInfoBarDelegate::GetInfoBarType() const {
+  return PAGE_ACTION_TYPE;
+}
+
+int AppBannerInfoBarDelegate::GetIconID() const {
+  return IDR_INFOBAR_APP_BANNER;
+}
+
+base::string16 AppBannerInfoBarDelegate::GetMessageText() const {
+  return l10n_util::GetStringUTF16(IDS_ADD_TO_SHELF_INFOBAR_TITLE);
+}
+
+base::string16 AppBannerInfoBarDelegate::GetButtonLabel(
+    InfoBarButton button) const {
+  return l10n_util::GetStringUTF16((button == BUTTON_OK)
+                                       ? IDS_ADD_TO_SHELF_INFOBAR_ADD_BUTTON
+                                       : IDS_ADD_TO_SHELF_INFOBAR_NEVER_BUTTON);

[benwells, 2015/06/02 05:53:35]

Having it sohw 'Never' is problematic. The heuristics we have will show it again
(in six months or something like that).

We should raise this with UX (rolfe).

+}
+
+bool AppBannerInfoBarDelegate::Accept() {
+  bookmark_app_helper_->CreateFromAppBanner(
+      base::Bind(&AppBannerDataFetcher::FinishCreateBookmarkApp, fetcher_),
+      web_app_data_);
+  return true;
+}
+
+bool AppBannerInfoBarDelegate::Cancel() {
+  content::WebContents* web_contents =
+      InfoBarService::WebContentsFromInfoBar(infobar());
+  if (web_contents) {

[benwells, 2015/06/02 05:53:35]

Does the data fetcher need to be canceled at this point so it isn't active?

[dominickn (DO NOT USE), 2015/06/02 06:51:32]

Done.

+    AppBannerSettingsHelper::RecordBannerDismissEvent(
+        web_contents, web_app_data_.start_url.spec(),
+        "AppBanner.WebApp.Dismissed", event_request_id_);
+  }
+  return true;
+}
+
+void AppBannerInfoBarDelegate::InfoBarDismissed() {
+  Cancel();
+}
+
+}  // namespace banners