webapps: initial addition of splash screen icon downloading

chrome/browser/android/shortcut_helper.cc

 // Copyright 2013 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/shortcut_helper.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/basictypes.h"
-#include "base/location.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
-#include "chrome/browser/banners/app_banner_settings_helper.h"
+#include "chrome/browser/manifest/manifest_icon_downloader.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
-#include "content/public/common/manifest.h"
 #include "jni/ShortcutHelper_jni.h"
 #include "ui/gfx/android/java_bitmap.h"
-#include "ui/gfx/color_analysis.h"
 #include "url/gurl.h"
 
 using content::Manifest;
 
 // static
 void ShortcutHelper::AddShortcutInBackgroundWithSkBitmap(
     const ShortcutInfo& info,
+    const std::string& webapp_id,
     const SkBitmap& icon_bitmap) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
 
   // Send the data to the Java side to create the shortcut.
   JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> java_webapp_id =
+      base::android::ConvertUTF8ToJavaString(env, webapp_id);
   ScopedJavaLocalRef<jstring> java_url =
       base::android::ConvertUTF8ToJavaString(env, info.url.spec());
   ScopedJavaLocalRef<jstring> java_user_title =
       base::android::ConvertUTF16ToJavaString(env, info.user_title);
   ScopedJavaLocalRef<jstring> java_name =
       base::android::ConvertUTF16ToJavaString(env, info.name);
   ScopedJavaLocalRef<jstring> java_short_name =
       base::android::ConvertUTF16ToJavaString(env, info.short_name);
   ScopedJavaLocalRef<jobject> java_bitmap;
   if (icon_bitmap.getSize())
     java_bitmap = gfx::ConvertToJavaBitmap(&icon_bitmap);
 
   Java_ShortcutHelper_addShortcut(
       env,
       base::android::GetApplicationContext(),
+      java_webapp_id.obj(),
       java_url.obj(),
       java_user_title.obj(),
       java_name.obj(),
       java_short_name.obj(),
       java_bitmap.obj(),
       info.display == blink::WebDisplayModeStandalone,
       info.orientation,
       info.source,
       info.theme_color,
       info.background_color);
 }
 
+// static
+void ShortcutHelper::FetchSplashScreenImage(
+    content::WebContents* web_contents,
+    const GURL& image_url,
+    const int ideal_splash_image_size_in_dp,
+    const std::string& webapp_id) {
+  // This is a fire and forget task. It is not vital for the splash screen image
+  // to be downloaded so if the downloader returns false there is no fallback.
+  ManifestIconDownloader::Download(
+      web_contents,
+      image_url,
+      ideal_splash_image_size_in_dp,
+      base::Bind(&ShortcutHelper::StoreWebappData, webapp_id));
+}
+
+// static
+void ShortcutHelper::StoreWebappData(
+    const std::string& webapp_id,
+    const SkBitmap& splash_image) {
+  if (splash_image.drawsNothing())
+    return;
+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> java_webapp_id =
+      base::android::ConvertUTF8ToJavaString(env, webapp_id);
+  ScopedJavaLocalRef<jobject> java_splash_image =
+      gfx::ConvertToJavaBitmap(&splash_image);
+
+  Java_ShortcutHelper_storeWebappData(
+      env,
+      base::android::GetApplicationContext(),
+      java_webapp_id.obj(),
+      java_splash_image.obj());
+}
+
 bool ShortcutHelper::RegisterShortcutHelper(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }