Update Offline Indicator UI based on latest mock

Changed the icon and action link text per spec.

Bug: 852577
Change-Id: I7d3a260ead0d1c0affcbde35a343bacd0f5b34c7
Reviewed-on: https://chromium-review.googlesource.com/1195923Reviewed-by: Peter Williamson <petewil@chromium.org>
Commit-Queue: Jian Li <jianli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587319}

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/indicator/OfflineIndicatorController.java

@@ -128,8 +128,7 @@ public class OfflineIndicatorController
     private void showOfflineIndicator(Activity activity, SnackbarManager snackbarManager) {
         if (mIsShowingOfflineIndicator || !canShowOfflineIndicator(activity)) return;
 
-        Drawable icon =
-                AppCompatResources.getDrawable(activity, R.drawable.ic_offline_pin_blue_white);
+        Drawable icon = AppCompatResources.getDrawable(activity, R.drawable.ic_offline_pin_white);
         Snackbar snackbar =
                 Snackbar.make(activity.getString(R.string.offline_indicator_offline_title), this,
                                 Snackbar.TYPE_ACTION, Snackbar.UMA_OFFLINE_INDICATOR)

chrome/android/java/strings/android_chrome_strings.grd

@@ -3039,7 +3039,7 @@ To obtain new licenses, connect to the internet and play your downloaded content
       </message>
 
       <message name="IDS_OFFLINE_INDICATOR_VIEW_OFFLINE_CONTENT" desc="A text label on the snackbar widget to bring up the list of offline content.">
-        View offline content
+        See downloads
       </message>
 
       <!-- Find in page -->