[Android] Changes in FeedSurfaceCoordinator

Chromium change:
https://chromium.googlesource.com/chromium/src/+/e274ab4bfbb68201b4c2cf36e8b7c0cf29981c17

Add enable_feed_v1 compile flag

And restructure feed code so that we can use it.

This flag pulls Feed v1 out of the build.
It's a bit different that enable_feed_v2. enable_feed_v2
retains most of the v2 code in chromium -- only the internal
code is actually removed when enable_feed_v2 is off.
If both flags are ON (the default), we use the InterestFeedV2
feature to select which version to use. To facilitate this,
only feed_feature_list.cc and FeedFeatures.java should inspect
the state of this feature directly.

If both build flags are OFF, we use the V2 UI classes as
essentially a pass-through to a recycler view, but will
not request any Feed content.

The compile flag enable_feed_in_chrome was removed.

Other changes:
* I've moved some files around to make it more clear what code
  is for v1 only.
* I've added FeedV1 and FeedV2 java classes to wrap access to
  version specific things, so that FeedV1 can be removed using
  the compile flag.

Bug: 1129187

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

@@ -15,7 +15,6 @@
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.supplier.Supplier;
 import org.chromium.chrome.R;
-import org.chromium.chrome.browser.feed.action.FeedActionHandler;
 import org.chromium.chrome.browser.feed.library.api.host.action.ActionApi;
 import org.chromium.chrome.browser.feed.shared.FeedSurfaceDelegate;
 import org.chromium.chrome.browser.native_page.NativePageNavigationDelegate;
@@ -37,13 +36,13 @@ public class BraveFeedSurfaceCoordinator extends FeedSurfaceCoordinator {
     public BraveFeedSurfaceCoordinator(Activity activity, SnackbarManager snackbarManager,
             TabModelSelector tabModelSelector, Supplier<Tab> tabProvider,
             @Nullable SnapScrollHelper snapScrollHelper, @Nullable View ntpHeader,
-            @Nullable SectionHeaderView sectionHeaderView, FeedActionHandler.Options actionOptions,
+            @Nullable SectionHeaderView sectionHeaderView, FeedV1ActionOptions actionOptions,
             boolean showDarkBackground, FeedSurfaceDelegate delegate,
             @Nullable NativePageNavigationDelegate pageNavigationDelegate, Profile profile,
-            boolean isPlaceholderShown, BottomSheetController bottomSheetController) {
+            boolean isPlaceholderRequested, BottomSheetController bottomSheetController) {
         super(activity, snackbarManager, tabModelSelector, tabProvider, snapScrollHelper, ntpHeader,
                 sectionHeaderView, actionOptions, showDarkBackground, delegate,
-                pageNavigationDelegate, profile, isPlaceholderShown, bottomSheetController);
+                pageNavigationDelegate, profile, isPlaceholderRequested, bottomSheetController);
     }
 
     @Override

android/java/org/chromium/chrome/browser/ntp/BraveNewTabPage.java

@@ -13,7 +13,7 @@
 import org.chromium.chrome.browser.browser_controls.BrowserControlsStateProvider;
 import org.chromium.chrome.browser.compositor.layouts.OverviewModeBehavior;
 import org.chromium.chrome.browser.feed.BraveFeedSurfaceCoordinator;
-import org.chromium.chrome.browser.feed.FeedProcessScopeFactory;
+import org.chromium.chrome.browser.feed.shared.FeedFeatures;
 import org.chromium.chrome.browser.feed.shared.FeedSurfaceProvider;
 import org.chromium.chrome.browser.lifecycle.ActivityLifecycleDispatcher;
 import org.chromium.chrome.browser.profiles.Profile;
@@ -52,7 +52,7 @@ protected void initializeMainView(Activity activity, Supplier<Tab> tabProvider,
         // Override surface provider
         Profile profile = Profile.fromWebContents(mTab.getWebContents());
 
-        assert !FeedProcessScopeFactory.isFeedProcessEnabled();
+        assert !FeedFeatures.isFeedEnabled();
         mFeedSurfaceProvider = new BraveFeedSurfaceCoordinator(activity, snackbarManager,
                 tabModelSelector, tabProvider,
                 new SnapScrollHelper(mNewTabPageManager, mNewTabPageLayout), mNewTabPageLayout,