Split wrongly merged text resource for "saved to disk" indicator.

"Saved" also appears as IDS_DATA_REDUCTION_BREAKDOWN_SAVED_TITLE
in src/chrome/android/java/strings/android_chrome_strings.grd.
It has caused that Gallery app say "amount reduced" in Japanese
whereas it should say "storing done". After this change we can put
separate translations for those two phrases.

Bug: 850385
Change-Id: Ie8204c023df771fcf22dac2fb9e177408097e880
Reviewed-on: https://chromium-review.googlesource.com/1090518Reviewed-by: Sasha Morrissey <sashab@chromium.org>
Commit-Queue: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565527}

chrome/app/chromeos_strings.grdp

@@ -524,7 +524,7 @@
   <message name="IDS_FILE_BROWSER_GALLERY_FILE_EXISTS" desc="In the Gallery, the message informing that file already exists when attempting to rename.">
     File already exists
   </message>
-  <message name="IDS_FILE_BROWSER_GALLERY_SAVED" desc="In the Gallery, the message informing that editing saved successfully.">
+  <message name="IDS_FILE_BROWSER_GALLERY_SAVED" meaning="saved to disk" desc="In the Gallery, the message informing that editing saved successfully.">
     Saved
   </message>
   <message name="IDS_FILE_BROWSER_GALLERY_SAVE_FAILED" desc="In the Gallery, the message informing that it failed to save editing image.">