[Screenshots] reformat saved datestamp

Bug: 1093374
Change-Id: Ifbce5ef6720b7bc449167ab2a3b5471d20625596
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2283925Reviewed-by: Travis Skare <skare@chromium.org>
Reviewed-by: Kristi Park <kristipark@chromium.org>
Commit-Queue: Jeffrey Cohen <jeffreycohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#786069}

chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/screenshot/ScreenshotShareSheetMediator.java

@@ -67,6 +67,7 @@ class ScreenshotShareSheetMediator {
             share();
         } else if (NoArgOperation.SAVE == operation) {
             mSaveRunnable.run();
+            mDeleteRunnable.run();
         } else if (NoArgOperation.DELETE == operation) {
             mDeleteRunnable.run();
         } else if (NoArgOperation.INSTALL == operation) {

chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/screenshot/ScreenshotShareSheetSaveDelegate.java

@@ -8,11 +8,12 @@ import android.content.Context;
 import android.graphics.Bitmap;
 
 import org.chromium.chrome.R;
-import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.share.BitmapDownloadRequest;
-import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.ui.modelutil.PropertyModel;
 
+import java.text.DateFormat;
+import java.util.Date;
+
 /**
  * ScreenshotShareSheetSaveDelegate is in charge of download the current bitmap.
  */
@@ -36,13 +37,10 @@ class ScreenshotShareSheetSaveDelegate {
     protected void save() {
         Bitmap bitmap = mModel.get(ScreenshotShareSheetViewProperties.SCREENSHOT_BITMAP);
         if (bitmap != null) {
-            String url;
+            DateFormat dateFormat =
+                    DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.LONG);
             String fileName = mContext.getString(R.string.screenshot_filename_prefix,
-                    String.valueOf(System.currentTimeMillis()));
-            Tab tab = ((ChromeActivity) mContext).getActivityTabProvider().get();
-            if (tab != null) {
-                url = tab.getUrl().getSpec();
-            }
+                    dateFormat.format(new Date(System.currentTimeMillis())));
             BitmapDownloadRequest.downloadBitmap(fileName, bitmap);
         }
     }