webapps: initial addition of splash screen icon downloading

chrome/browser/android/banners/app_banner_data_fetcher_android.cc

Index: chrome/browser/android/banners/app_banner_data_fetcher_android.cc
diff --git a/chrome/browser/android/banners/app_banner_data_fetcher_android.cc b/chrome/browser/android/banners/app_banner_data_fetcher_android.cc
index 024b456678bcbab1d3a3bd7c6a0208a5491127b1..d18eb59f058d297612600e3c46a6fb644af42965 100644
--- a/chrome/browser/android/banners/app_banner_data_fetcher_android.cc
+++ b/chrome/browser/android/banners/app_banner_data_fetcher_android.cc
@@ -5,18 +5,23 @@
 #include "chrome/browser/android/banners/app_banner_data_fetcher_android.h"
 
 #include "chrome/browser/android/banners/app_banner_infobar_delegate_android.h"
+#include "chrome/browser/android/shortcut_helper.h"
 #include "chrome/browser/banners/app_banner_metrics.h"
 #include "chrome/browser/infobars/infobar_service.h"
+#include "chrome/browser/manifest/manifest_icon_selector.h"
 #include "chrome/browser/ui/android/infobars/app_banner_infobar_android.h"
 #include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/gfx/screen.h"
 
 namespace banners {
 
 AppBannerDataFetcherAndroid::AppBannerDataFetcherAndroid(
     content::WebContents* web_contents,
     base::WeakPtr<Delegate> weak_delegate,
-    int ideal_icon_size)
-    : AppBannerDataFetcher(web_contents, weak_delegate, ideal_icon_size) {
+    int ideal_splash_image_size_in_dp,
+    int ideal_icon_size_in_dp)
+    : AppBannerDataFetcher(web_contents, weak_delegate, ideal_icon_size_in_dp),
+      ideal_splash_image_size_in_dp_(ideal_splash_image_size_in_dp) {
 }
 
 AppBannerDataFetcherAndroid::~AppBannerDataFetcherAndroid() {
@@ -43,6 +48,20 @@ std::string AppBannerDataFetcherAndroid::GetAppIdentifier() {
       ? AppBannerDataFetcher::GetAppIdentifier() : native_app_package_;
 }
 
+void AppBannerDataFetcherAndroid::FetchWebappSplashScreenImage(
+    const std::string& webapp_id) {
+  content::WebContents* web_contents = GetWebContents();
+  DCHECK(web_contents);
+
+  GURL image_url = ManifestIconSelector::FindBestMatchingIcon(
+      web_app_data().icons,
+      ideal_splash_image_size_in_dp_,
+      gfx::Screen::GetScreenFor(web_contents->GetNativeView()));
+
+  ShortcutHelper::FetchSplashScreenImage(
+      web_contents, image_url, ideal_splash_image_size_in_dp_, webapp_id);
+}
+
 void AppBannerDataFetcherAndroid::ShowBanner(const SkBitmap* icon,
                                              const base::string16& title,
                                              const std::string& referrer) {
@@ -53,7 +72,8 @@ void AppBannerDataFetcherAndroid::ShowBanner(const SkBitmap* icon,
   if (native_app_data_.is_null()) {
     scoped_ptr<AppBannerInfoBarDelegateAndroid> delegate(
         new AppBannerInfoBarDelegateAndroid(
-            event_request_id(), title, new SkBitmap(*icon), web_app_data()));
+            event_request_id(), this, title, new SkBitmap(*icon),
+            web_app_data()));
 
     infobar =
         new AppBannerInfoBarAndroid(delegate.Pass(), web_app_data().start_url);