Don't ignore manifest icons for sites that don't have a service worker.

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.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/android/webapps/add_to_homescreen_data_fetcher.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 30 matching lines @@
 const int kDataTimeoutInMilliseconds = 4000;
 
 // Looks up the original, online URL of the site requested.  The URL from the
 // WebContents may be a distilled article which is not appropriate for a home
 // screen shortcut.
 GURL GetShortcutUrl(content::BrowserContext* browser_context,
                     const GURL& actual_url) {
   return dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(actual_url);
 }
 
+InstallableParams ParamsToPerformManifestAndIconFetch(
+    int ideal_icon_size_in_px,
+    int minimum_icon_size_in_px) {
+  InstallableParams params;
+  params.ideal_primary_icon_size_in_px = ideal_icon_size_in_px;
+  params.minimum_primary_icon_size_in_px = minimum_icon_size_in_px;
+  params.fetch_valid_primary_icon = true;
+  return params;
+}
+
 InstallableParams ParamsToPerformInstallableCheck(
     int ideal_icon_size_in_px,
     int minimum_icon_size_in_px,
     int badge_size_in_px,
     bool check_webapk_compatibility) {
-  InstallableParams params;
-  params.ideal_primary_icon_size_in_px = ideal_icon_size_in_px;
-  params.minimum_primary_icon_size_in_px = minimum_icon_size_in_px;
-  params.check_installable = check_webapk_compatibility;
-  params.fetch_valid_primary_icon = true;
+  InstallableParams params = ParamsToPerformManifestAndIconFetch(
+      ideal_icon_size_in_px, minimum_icon_size_in_px);
   if (check_webapk_compatibility) {
+    params.check_installable = check_webapk_compatibility;
     params.ideal_badge_icon_size_in_px = badge_size_in_px;
     params.minimum_badge_icon_size_in_px = badge_size_in_px;
     params.fetch_valid_badge_icon = true;
   }
   return params;
 }
 
 }  // namespace
 
 AddToHomescreenDataFetcher::AddToHomescreenDataFetcher(
     content::WebContents* web_contents,
     int ideal_icon_size_in_px,
     int minimum_icon_size_in_px,
     int ideal_splash_image_size_in_px,
     int minimum_splash_image_size_in_px,
     int badge_size_in_px,
     bool check_webapk_compatibility,
     Observer* observer)
     : WebContentsObserver(web_contents),
       background_task_runner_(
           content::BrowserThread::GetBlockingPool()
               ->GetTaskRunnerWithShutdownBehavior(
                   base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)),
+      installable_manager_(InstallableManager::FromWebContents(web_contents)),
       weak_observer_(observer),
       shortcut_info_(GetShortcutUrl(web_contents->GetBrowserContext(),
                                     web_contents->GetLastCommittedURL())),
       ideal_icon_size_in_px_(ideal_icon_size_in_px),
       minimum_icon_size_in_px_(minimum_icon_size_in_px),
       ideal_splash_image_size_in_px_(ideal_splash_image_size_in_px),
       minimum_splash_image_size_in_px_(minimum_splash_image_size_in_px),
       badge_size_in_px_(badge_size_in_px),
       check_webapk_compatibility_(check_webapk_compatibility),
       is_waiting_for_web_application_info_(true),
@@ skipping 42 matching lines @@
     case WebApplicationInfo::MOBILE_CAPABLE_APPLE:
       base::RecordAction(
           base::UserMetricsAction("webapps.AddShortcut.AppShortcutApple"));
       break;
     case WebApplicationInfo::MOBILE_CAPABLE_UNSPECIFIED:
       base::RecordAction(
           base::UserMetricsAction("webapps.AddShortcut.Bookmark"));
       break;
   }
 
-  InstallableManager::CreateForWebContents(web_contents());
-  InstallableManager* manager =
-      InstallableManager::FromWebContents(web_contents());
-  DCHECK(manager);
-
   // Kick off a timeout for downloading data. If we haven't finished within the
   // timeout, fall back to using a dynamically-generated launcher icon.
   data_timeout_timer_.Start(
       FROM_HERE, base::TimeDelta::FromMilliseconds(kDataTimeoutInMilliseconds),
       base::Bind(&AddToHomescreenDataFetcher::OnDataTimedout, this));
 
-  manager->GetData(
-      ParamsToPerformInstallableCheck(ideal_icon_size_in_px_,
-                                      minimum_icon_size_in_px_,
-                                      badge_size_in_px_,
-                                      check_webapk_compatibility_),
-      base::Bind(&AddToHomescreenDataFetcher::OnDidPerformInstallableCheck,
-                 this));
+  installable_manager_->GetData(
+      ParamsToPerformManifestAndIconFetch(ideal_icon_size_in_px_,
+                                          minimum_icon_size_in_px_),
+      base::Bind(&AddToHomescreenDataFetcher::OnDidGetManifestAndIcon, this));
 }
 
 AddToHomescreenDataFetcher::~AddToHomescreenDataFetcher() {
   DCHECK(!weak_observer_);
 }
 
 bool AddToHomescreenDataFetcher::OnMessageReceived(
     const IPC::Message& message,
     content::RenderFrameHost* sender) {
   if (!is_waiting_for_web_application_info_)
@@ skipping 15 matching lines @@
     return;
 
   if (!is_installable_check_complete_) {
     is_installable_check_complete_ = true;
     if (check_webapk_compatibility_)
       weak_observer_->OnDidDetermineWebApkCompatibility(false);
     weak_observer_->OnUserTitleAvailable(shortcut_info_.user_title);
   }
 
   badge_icon_.reset();
-  CreateLauncherIcon(SkBitmap());
+  CreateLauncherIcon(raw_icon_);

[pkotwicz, 2017/06/22 17:49:27]

We should probably rename |raw_icon_| to |primary_raw_icon_|

[dominickn, 2017/06/23 01:52:03]

Done.

+}
+
+void AddToHomescreenDataFetcher::OnDidGetManifestAndIcon(
+    const InstallableData& data) {
+  if (!web_contents() || !weak_observer_ || is_installable_check_complete_)
+    return;
+
+  if (!data.manifest.IsEmpty()) {
+    base::RecordAction(base::UserMetricsAction("webapps.AddShortcut.Manifest"));
+    shortcut_info_.UpdateFromManifest(data.manifest);
+    shortcut_info_.manifest_url = data.manifest_url;
+
+    if (data.primary_icon && !data.primary_icon->drawsNothing()) {

[pkotwicz, 2017/06/22 17:49:27]

Nit: Based on InstallableManager::OnIconFetched(), it looks like
data.primary_icon would be null if the icon draws nothing.

[dominickn, 2017/06/23 01:52:03]

Good point, can't even remember code that I wrote.

+      raw_icon_ = *data.primary_icon;
+      shortcut_info_.best_primary_icon_url = data.primary_icon_url;
+
+      // Save the splash screen URL for the later download.
+      shortcut_info_.splash_image_url =
+          content::ManifestIconSelector::FindBestMatchingIcon(
+              data.manifest.icons, ideal_splash_image_size_in_px_,
+              minimum_splash_image_size_in_px_,
+              content::Manifest::Icon::IconPurpose::ANY);
+      shortcut_info_.ideal_splash_image_size_in_px =
+          ideal_splash_image_size_in_px_;
+      shortcut_info_.minimum_splash_image_size_in_px =
+          minimum_splash_image_size_in_px_;
+    }
+  }
+
+  installable_manager_->GetData(
+      ParamsToPerformInstallableCheck(
+          ideal_icon_size_in_px_, minimum_icon_size_in_px_, badge_size_in_px_,
+          check_webapk_compatibility_),
+      base::Bind(&AddToHomescreenDataFetcher::OnDidPerformInstallableCheck,
+                 this));
 }
 
 void AddToHomescreenDataFetcher::OnDidPerformInstallableCheck(
     const InstallableData& data) {
   data_timeout_timer_.Stop();
   badge_icon_.reset();
 
   if (!web_contents() || !weak_observer_ || is_installable_check_complete_)
     return;
 
   is_installable_check_complete_ = true;
 
   bool webapk_compatible = false;
   if (check_webapk_compatibility_) {
     webapk_compatible = (data.error_code == NO_ERROR_DETECTED &&
                          AreWebManifestUrlsWebApkCompatible(data.manifest));

[pkotwicz, 2017/06/22 17:49:27]

I think that it might be more intuitive if ParamsToPerformInstallableCheck() was
instead:

InstallableParams ParamsToPerformManifestAndIconFetch(bool
check_webapk_compatibility) {
  InstallableParams params;
  params.check_installable = check_webapk_compatibility;
  return params;
}

I am suggesting that OnDidGetManifestAndIcon() would fetch the badge icon as
well

the webapk_compatibility determination on line 251 would become:

webapk_compatible =
    (data.error_code == NO_ERROR_DETECTED &&
     !raw_icon_.is_null() &&
     AreWebManifestUrlsWebApkCompatible(data.manifest));

[dominickn, 2017/06/23 01:52:04]

That won't work: setting check_installable to true will make us wait for the
service worker. But I can fetch the badge icon based on the
check_webapk_compatibility value if that's what you mean. That means this piece
code will never be reached if we don't have valid icons.

[pkotwicz, 2017/06/23 19:23:18]

Sorry for the confusion. I meant it would be more intuitive if
ParamsToPerformInstallableCheck() was instead:

InstallableParams ParamsToPerformInstallableCheck(bool
check_webapk_compatibility) {
  InstallableParams params;
  params.check_installable = check_webapk_compatibility;
  return params;
}

It would be nice if we did not make the second call to
InstallableManager::GetData() unless |check_webapk_compatibility_| == true

[pkotwicz, 2017/06/23 19:30:45]

Oh, I see you have in fact made this change :)

[dominickn, 2017/06/26 02:39:16]

When WebAPKs are enabled by default we'll always want to make the second call
unless the manifest is empty. :)

     weak_observer_->OnDidDetermineWebApkCompatibility(webapk_compatible);
+  }
 
-    if (webapk_compatible) {
-      // WebAPKs are wholly defined by the Web Manifest. Ignore the <meta> tag
-      // data received in OnDidGetWebApplicationInfo().
-      shortcut_info_ = ShortcutInfo(GURL());
+  if (webapk_compatible) {
+    shortcut_info_.UpdateSource(ShortcutInfo::SOURCE_ADD_TO_HOMESCREEN_PWA);
+
+    if (data.badge_icon && !data.badge_icon->drawsNothing()) {
+      shortcut_info_.best_badge_icon_url = data.badge_icon_url;
+      badge_icon_ = *data.badge_icon;
     }
   }
 
-  if (!data.manifest.IsEmpty()) {
-    base::RecordAction(base::UserMetricsAction("webapps.AddShortcut.Manifest"));
-    shortcut_info_.UpdateFromManifest(data.manifest);
-    shortcut_info_.manifest_url = data.manifest_url;
-
-    if (webapk_compatible) {
-      shortcut_info_.UpdateSource(ShortcutInfo::SOURCE_ADD_TO_HOMESCREEN_PWA);
-
-      if (data.badge_icon && !data.badge_icon->drawsNothing()) {
-        shortcut_info_.best_badge_icon_url = data.badge_icon_url;
-        badge_icon_ = *data.badge_icon;
-      }
-    }
-  }
-
-  // Save the splash screen URL for the later download.
-  shortcut_info_.splash_image_url =
-      content::ManifestIconSelector::FindBestMatchingIcon(
-          data.manifest.icons, ideal_splash_image_size_in_px_,
-          minimum_splash_image_size_in_px_,
-          content::Manifest::Icon::IconPurpose::ANY);
-  shortcut_info_.ideal_splash_image_size_in_px = ideal_splash_image_size_in_px_;
-  shortcut_info_.minimum_splash_image_size_in_px =
-      minimum_splash_image_size_in_px_;
-
   weak_observer_->OnUserTitleAvailable(shortcut_info_.user_title);
 
-  if (data.primary_icon) {
-    shortcut_info_.best_primary_icon_url = data.primary_icon_url;
-
+  if (!raw_icon_.drawsNothing()) {
     if (webapk_compatible)
-      NotifyObserver(*data.primary_icon);
+      NotifyObserver(raw_icon_);
     else
-      CreateLauncherIcon(*(data.primary_icon));
+      CreateLauncherIcon(raw_icon_);
     return;
   }
 
   FetchFavicon();
 }
 
 void AddToHomescreenDataFetcher::FetchFavicon() {
   if (!web_contents() || !weak_observer_)
     return;
 
@@ skipping 29 matching lines @@
                      CreateLauncherIconFromFaviconInBackground,
                  base::Unretained(this), bitmap_result),
       base::Bind(&AddToHomescreenDataFetcher::NotifyObserver,
                  base::RetainedRef(this)));
 }
 
 SkBitmap AddToHomescreenDataFetcher::CreateLauncherIconFromFaviconInBackground(
     const favicon_base::FaviconRawBitmapResult& bitmap_result) {
   base::ThreadRestrictions::AssertIOAllowed();
 
-  SkBitmap raw_icon;
   if (bitmap_result.is_valid()) {
     gfx::PNGCodec::Decode(bitmap_result.bitmap_data->front(),
-                          bitmap_result.bitmap_data->size(), &raw_icon);
+                          bitmap_result.bitmap_data->size(), &raw_icon_);
   }
 
   shortcut_info_.best_primary_icon_url = bitmap_result.icon_url;
-  return CreateLauncherIconInBackground(raw_icon);
+  return CreateLauncherIconInBackground(raw_icon_);
 }
 
-void AddToHomescreenDataFetcher::CreateLauncherIcon(const SkBitmap& raw_icon) {
+void AddToHomescreenDataFetcher::CreateLauncherIcon(const SkBitmap& icon) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   base::PostTaskAndReplyWithResult(
       background_task_runner_.get(), FROM_HERE,
       base::Bind(&AddToHomescreenDataFetcher::CreateLauncherIconInBackground,
-                 base::Unretained(this), raw_icon),
+                 base::Unretained(this), icon),
       base::Bind(&AddToHomescreenDataFetcher::NotifyObserver,
                  base::RetainedRef(this)));
 }
 
 SkBitmap AddToHomescreenDataFetcher::CreateLauncherIconInBackground(
-    const SkBitmap& raw_icon) {
+    const SkBitmap& icon) {
   base::ThreadRestrictions::AssertIOAllowed();
 
   SkBitmap primary_icon;
   bool is_generated = false;
   if (weak_observer_) {
     primary_icon = weak_observer_->FinalizeLauncherIconInBackground(
-        raw_icon, shortcut_info_.url, &is_generated);
+        icon, shortcut_info_.url, &is_generated);
   }
 
   if (is_generated)
     shortcut_info_.best_primary_icon_url = GURL();
 
   return primary_icon;
 }
 
 void AddToHomescreenDataFetcher::NotifyObserver(const SkBitmap& primary_icon) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (!web_contents() || !weak_observer_ || is_icon_saved_)
     return;
 
   is_icon_saved_ = true;
   primary_icon_ = primary_icon;
   weak_observer_->OnDataAvailable(shortcut_info_, primary_icon_, badge_icon_);
 }