Add null check in LocationBarPhone#updateGoogleG

Bug: 843024
Change-Id: I559a2d65f5112724112a0a57b38e4da4ef375bc4
Reviewed-on: https://chromium-review.googlesource.com/1060116Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Becky Zhou <huayinz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558813}

chrome/android/java/src/org/chromium/chrome/browser/omnibox/LocationBarPhone.java

@@ -200,6 +200,9 @@ public class LocationBarPhone extends LocationBarLayout {
     }
 
     private void updateGoogleG() {
+        // Inflation might not be finished yet during startup.
+        if (mGoogleGContainer == null) return;
+
         // The toolbar data provider can be null during startup, before the ToolbarManager has been
         // initialized.
         ToolbarDataProvider toolbarDataProvider = getToolbarDataProvider();