[Instant Start] Show Sign-in box for Feed articles pre-native.

Bug: 1086961
Change-Id: If811181513eced84a7c92960520a5f8e5f398398
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2218849
Commit-Queue: Hao Dong <spdonghao@chromium.org>
Reviewed-by: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Reviewed-by: Xi Han <hanxi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776558}

chrome/android/features/start_surface/internal/BUILD.gn

@@ -91,6 +91,7 @@ android_library("java") {
 
     deps += [
       "//chrome/browser/profiles/android:java",
+      "//components/signin/public/android:java",
       "//content/public/android:content_java",
       "//third_party/android_sdk/androidx_browser:androidx_browser_java",
       "//ui/android:ui_utils_java",

chrome/android/features/start_surface/internal/java/res/layout/feed_loading_layout.xml

@@ -32,6 +32,12 @@
             android:textAppearance="@style/TextAppearance.TextMedium.Blue" />
     </LinearLayout>
 
+    <LinearLayout
+        android:id="@+id/sign_in_box"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"/>
+
     <LinearLayout
         android:id="@+id/images_layout"
         android:layout_width="match_parent"

chrome/android/features/start_surface/internal/java/src/org/chromium/chrome/features/start_surface/FeedLoadingCoordinator.java

@@ -10,7 +10,12 @@ import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
 import android.view.ViewGroup;
 
+import org.chromium.chrome.browser.ntp.cards.SignInPromo;
+import org.chromium.chrome.browser.signin.ProfileDataCache;
+import org.chromium.chrome.browser.signin.SigninPromoController;
+import org.chromium.chrome.browser.signin.SigninPromoUtil;
 import org.chromium.chrome.start_surface.R;
+import org.chromium.components.signin.metrics.SigninAccessPoint;
 
 /** The coordinator to control the loading feed surface. */
 public class FeedLoadingCoordinator {
@@ -30,5 +35,15 @@ public class FeedLoadingCoordinator {
                 (FeedLoadingLayout) LayoutInflater.from(mContext).inflate(
                         R.layout.feed_loading_layout, null, false);
         mParentView.addView(feedLoadingView);
+
+        if (SignInPromo.shouldCreatePromo()) {
+            SigninPromoController signinPromoController =
+                    new SigninPromoController(SigninAccessPoint.NTP_CONTENT_SUGGESTIONS);
+            int imageSize =
+                    mContext.getResources().getDimensionPixelSize(R.dimen.user_picture_size);
+            ProfileDataCache profileDataCache = new ProfileDataCache(mContext, imageSize);
+            SigninPromoUtil.setupPromoViewFromCache(signinPromoController, profileDataCache,
+                    feedLoadingView.getSigninPromoView(), null);
+        }
     }
 }

chrome/android/features/start_surface/internal/java/src/org/chromium/chrome/features/start_surface/FeedLoadingLayout.java

@@ -8,10 +8,14 @@ import android.content.Context;
 import android.content.res.Configuration;
 import android.util.AttributeSet;
 import android.util.TypedValue;
+import android.view.LayoutInflater;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 
+import androidx.annotation.Nullable;
+
+import org.chromium.chrome.browser.signin.PersonalizedSigninPromoView;
 import org.chromium.chrome.start_surface.R;
 
 /**
@@ -19,6 +23,7 @@ import org.chromium.chrome.start_surface.R;
  */
 public class FeedLoadingLayout extends LinearLayout {
     private Context mContext;
+    private @Nullable PersonalizedSigninPromoView mSigninPromoView;
 
     public FeedLoadingLayout(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -38,6 +43,22 @@ public class FeedLoadingLayout extends LinearLayout {
         setImageForConfiguration();
     }
 
+    /** @return The {@link PersonalizedSigninPromoView} for this class. */
+    PersonalizedSigninPromoView getSigninPromoView() {
+        if (mSigninPromoView == null) {
+            mSigninPromoView = (PersonalizedSigninPromoView) LayoutInflater.from(mContext).inflate(
+                    R.layout.personalized_signin_promo_view_modern_content_suggestions, null,
+                    false);
+            LinearLayout signView = findViewById(R.id.sign_in_box);
+            LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
+                    ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+            signView.setLayoutParams(lp);
+            lp.setMargins(0, 0, 0, dpToPx(12));
+            signView.addView(mSigninPromoView);
+        }
+        return mSigninPromoView;
+    }
+
     private void setImageForConfiguration() {
         int currentOrientation = getResources().getConfiguration().orientation;
         LinearLayout imageParentView = findViewById(R.id.images_layout);

chrome/android/features/start_surface/internal/javatests/src/org/chromium/chrome/features/start_surface/InstantStartTest.java

@@ -53,6 +53,7 @@ import org.chromium.chrome.browser.flags.CachedFeatureFlags;
 import org.chromium.chrome.browser.flags.ChromeFeatureList;
 import org.chromium.chrome.browser.flags.ChromeSwitches;
 import org.chromium.chrome.browser.homepage.HomepageManager;
+import org.chromium.chrome.browser.ntp.cards.SignInPromo;
 import org.chromium.chrome.browser.tab.TabState;
 import org.chromium.chrome.browser.tabmodel.TabPersistentStore;
 import org.chromium.chrome.browser.tabmodel.TabPersistentStore.TabModelMetadata;
@@ -612,6 +613,7 @@ public class InstantStartTest {
         createThumbnailBitmapAndWriteToFile(0);
         TabAttributeCache.setTitleForTesting(0, "Google");
 
+        SignInPromo.setDisablePromoForTests(true);
         startMainActivityFromLauncher();
         CriteriaHelper.pollUiThread(
                 () -> mActivityTestRule.getActivity().getLayoutManager().overviewVisible());