Android: Fix the bug not showing text suggestion

Lazy init (https://crrev.com/578223) doesn't work for
TextSuggestionHost whose UI gets triggered by native from Blink.
It expects the related components (java TextSuggestionHost and
blink::mojom::TextSuggestionHost) to be ready before it makes
the first call. This CL initializes the objects in eager fashion.

Bug: 884214
Change-Id: I1ef96d7d617a1fb745f2652a7e1f94e5d9406a24
Reviewed-on: https://chromium-review.googlesource.com/1253312Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Jinsuk Kim <jinsukkim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595608}

content/public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java

@@ -34,6 +34,7 @@ import org.chromium.content.browser.WindowEventObserverManager;
 import org.chromium.content.browser.accessibility.WebContentsAccessibilityImpl;
 import org.chromium.content.browser.framehost.RenderFrameHostDelegate;
 import org.chromium.content.browser.framehost.RenderFrameHostImpl;
+import org.chromium.content.browser.input.TextSuggestionHost;
 import org.chromium.content.browser.selection.SelectionPopupControllerImpl;
 import org.chromium.content_public.browser.AccessibilitySnapshotCallback;
 import org.chromium.content_public.browser.AccessibilitySnapshotNode;
@@ -229,6 +230,7 @@ public class WebContentsImpl implements WebContents, RenderFrameHostDelegate, Wi
 
         ViewEventSinkImpl.from(this).setAccessDelegate(accessDelegate);
         getRenderCoordinates().setDeviceScaleFactor(windowAndroid.getDisplay().getDipScale());
+        TextSuggestionHost.fromWebContents(this);
     }
 
     @Nullable