[Feed] Pass KnownContentApi to FeedOfflineBridge.

Bug: 866123
Change-Id: I3278d84df9a23f85452c30f2edb68313c197a0a7
Reviewed-on: https://chromium-review.googlesource.com/1222351
Commit-Queue: Sky Malice <skym@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Reviewed-by: Gang Wu <gangwu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591358}

chrome/android/feed/core/java/src/org/chromium/chrome/browser/feed/FeedOfflineBridge.java

@@ -44,8 +44,7 @@ public class FeedOfflineBridge
     public FeedOfflineBridge(Profile profile, KnownContentApi knownContentApi) {
         mNativeBridge = nativeInit(profile);
         mKnownContentApi = knownContentApi;
-        // TODO(skym): Remove this null check when a KnownContentApi is provided by Feed.
-        if (mKnownContentApi != null) mKnownContentApi.addListener(this);
+        mKnownContentApi.addListener(this);
     }
 
     @Override
@@ -53,8 +52,7 @@ public class FeedOfflineBridge
         assert mNativeBridge != 0;
         nativeDestroy(mNativeBridge);
         mNativeBridge = 0;
-        // TODO(skym): Remove this null check when a KnownContentApi is provided by Feed.
-        if (mKnownContentApi != null) mKnownContentApi.removeListener(this);
+        mKnownContentApi.removeListener(this);
     }
 
     @Override

chrome/android/feed/core/java/src/org/chromium/chrome/browser/feed/FeedProcessScopeFactory.java

@@ -68,8 +68,8 @@ public class FeedProcessScopeFactory {
         schedulerBridge.initializeFeedDependencies(
                 sFeedProcessScope.getRequestManager(), sFeedProcessScope.getSessionManager());
 
-        // TODO(skym): Use sFeedProcessScope.getKnownContentApi().
-        sFeedOfflineIndicator = new FeedOfflineBridge(profile, null);
+        sFeedOfflineIndicator =
+                new FeedOfflineBridge(profile, sFeedProcessScope.getKnownContentApi());
     }
 
     private static Configuration createConfiguration() {