Inline Updates: Show UI when downloading

Show a toast to the user when an inline update starts downloading.  This
currently has the side effect of reshowing whenever Chrome is started if
we're in the downloading state.

Bug: 934356
Change-Id: Ib83ac5cab8a1d66e234b5b55c0af76adbc92f72d
Reviewed-on: https://chromium-review.googlesource.com/c/1483706
Commit-Queue: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#635817}

chrome/android/java/src/org/chromium/chrome/browser/omaha/UpdateInfoBarController.java

@@ -13,6 +13,7 @@ import org.chromium.chrome.browser.lifecycle.Destroyable;
 import org.chromium.chrome.browser.omaha.UpdateStatusProvider.UpdateState;
 import org.chromium.chrome.browser.omaha.UpdateStatusProvider.UpdateStatus;
 import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.ui.widget.Toast;
 
 /** Helper class that creates infobars based on {@link UpdateState} changes. */
 public class UpdateInfoBarController implements Destroyable {
@@ -52,6 +53,9 @@ public class UpdateInfoBarController implements Destroyable {
             case UpdateState.INLINE_UPDATE_FAILED:
                 showFailedInfobar();
                 break;
+            case UpdateState.INLINE_UPDATE_DOWNLOADING:
+                showDownloadingToast();
+                break;
         }
     }
 
@@ -123,4 +127,13 @@ public class UpdateInfoBarController implements Destroyable {
                 mActivity.getString(R.string.cancel) /* secondaryText */, null /* linkText */,
                 false /* autoExpire */);
     }
+
+    private void showDownloadingToast() {
+        if (mActivity == null) return;
+
+        Toast.makeText(mActivity,
+                     mActivity.getString(R.string.inline_update_toast_downloading_message),
+                     Toast.LENGTH_LONG)
+                .show();
+    }
 }
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chrome/android/java/strings/android_chrome_strings.grd

@@ -1978,6 +1978,11 @@ To change this setting, <ph name="BEGIN_LINK">&lt;resetlink&gt;</ph>reset sync<p
         Couldn’t download the update
       </message>
 
+      <!-- Inline Update Toast -->
+      <message name="IDS_INLINE_UPDATE_TOAST_DOWNLOADING_MESSAGE" desc="Text showing when the user starts the inline update process in Chrome which lets the user know that the update is downloading.">
+        Downloading Chrome Update…
+      </message>
+
       <!-- TranslateInfoBar -->
       <message name="IDS_TRANSLATE_INFOBAR_ERROR">
         Oops. This page could not be translated.

chrome/android/java/strings/android_chrome_strings_grd/IDS_INLINE_UPDATE_TOAST_DOWNLOADING_MESSAGE.png.sha1

+bd1f70df59acad759d6643fd4f705dd5c8403e24
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