Use metadata when launching WebAPKs.

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
index 5ddee243bc56c741a54ca135ace38b0085a04ec7..c254b6f7fa9efc6d66c3b3dd24f07fab11fe8290 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
@@ -45,12 +45,18 @@ public class WebappDataStorage {
     static final String KEY_IS_ICON_GENERATED = "is_icon_generated";
     static final String KEY_VERSION = "version";
 
+    // The last time that Chrome sends a request to WebAPK Minting Server to download and install
+    // new ShellAPK version.
+    public static final String KEY_LAST_REQUEST_NEW_VERSION_SHELL_APK_TIME =
+            "last_request_new_version_shell_apk_time";
+
     // Unset/invalid constants for last used times and URLs. 0 is used as the null last
     // used time as WebappRegistry assumes that this is always a valid timestamp.
     static final long LAST_USED_UNSET = 0;
     static final long LAST_USED_INVALID = -1;
     static final String URL_INVALID = "";
     static final int VERSION_INVALID = 0;
+    static final long TIME_INVALID = -1;
 
     // We use a heuristic to determine whether a web app is still installed on the home screen, as
     // there is no way to do so directly. Any web app which has been opened in the last ten days
@@ -180,6 +186,7 @@ public class WebappDataStorage {
         editor.putLong(KEY_LAST_USED, LAST_USED_UNSET);
         editor.remove(KEY_URL);
         editor.remove(KEY_SCOPE);
+        editor.remove(KEY_LAST_REQUEST_NEW_VERSION_SHELL_APK_TIME);
         editor.apply();
     }
 
@@ -359,6 +366,20 @@ public class WebappDataStorage {
         return mPreferences.getString(KEY_URL, URL_INVALID);
     }
 
+    int getOrientation() {
+        return mPreferences.getInt(KEY_ORIENTATION, ScreenOrientationValues.DEFAULT);
+    }
+
+    long getBackgroundColor() {
+        return mPreferences.getLong(KEY_BACKGROUND_COLOR,
+                ShortcutHelper.MANIFEST_COLOR_INVALID_OR_MISSING);
+    }
+
+    long getThemeColor() {
+        return mPreferences.getLong(KEY_THEME_COLOR,
+                ShortcutHelper.MANIFEST_COLOR_INVALID_OR_MISSING);
+    }
+
     /**
      * Updates the last used time of this object.
      */
@@ -374,6 +395,23 @@ public class WebappDataStorage {
     }
 
     /**
+     * Updates the time of the last request to WebAPK Minting Server to download and install new
+     * ShellAPK version.
+     */
+    void updateLastRequestForNewShellApkVersionTime() {

[pkotwicz, 2016/06/20 18:26:15]

Nit: Can you do this change as part of a separate CL? My preference would be to
wait on adding this function till we are ready to use it. I am not a fan of
adding unused code to the code base.

[Xi Han, 2016/06/22 15:55:28]

Done.

+        mPreferences.edit().putLong(KEY_LAST_REQUEST_NEW_VERSION_SHELL_APK_TIME,
+                sClock.currentTimeMillis()).apply();
+    }
+
+    /**
+     * Returns the time of the last request to WebAPK Minting Server to download and install new
+     * ShellAPK version.
+     */
+    long getLastRequestForNewShellApkVersionTime() {
+        return mPreferences.getLong(KEY_LAST_REQUEST_NEW_VERSION_SHELL_APK_TIME, LAST_USED_INVALID);
+    }
+
+    /**
      * Returns true if this web app has been launched from home screen recently (within
      * WEBAPP_LAST_OPEN_MAX_TIME milliseconds).
      */