Add Chrome Home promo on the NTP.

Screenshots:
https://folio.googleplex.com/zine/chrome_home_promo

Bug: 769003
Change-Id: I37e452762f6696f53bd7c21ee09a8af5edcf1f03
Reviewed-on: https://chromium-review.googlesource.com/690715Reviewed-by: Nicolas Dossou-Gbété <dgn@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Bernhard Bauer <bauerb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#505369}

chrome/android/java/res/layout/new_tab_page_layout.xml

@@ -96,6 +96,23 @@
             android:src="@drawable/btn_mic" />
     </LinearLayout>
 
+    <!-- Chrome Home promo -->
+    <FrameLayout
+        android:id="@+id/chrome_home_promo_container"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:visibility="gone">
+        <org.chromium.ui.widget.TextViewWithClickableSpans
+            android:id="@+id/chrome_home_promo_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:drawableStart="@drawable/ic_new_releases_black_18dp"
+            android:drawablePadding="8dp"
+            android:padding="8dp"
+            android:textAppearance="@style/BlackHint2" />
+    </FrameLayout>
+
     <!-- Middle spacer -->
     <View
         android:id="@+id/ntp_middle_spacer"

chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java

@@ -18,6 +18,7 @@ import android.support.v7.widget.RecyclerView.AdapterDataObserver;
 import android.support.v7.widget.RecyclerView.ViewHolder;
 import android.text.Editable;
 import android.text.TextWatcher;
+import android.text.method.LinkMovementMethod;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
@@ -56,8 +57,11 @@ import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.util.FeatureUtilities;
 import org.chromium.chrome.browser.util.MathUtils;
 import org.chromium.chrome.browser.util.ViewUtils;
+import org.chromium.chrome.browser.widget.bottomsheet.ChromeHomePromoDialog;
 import org.chromium.chrome.browser.widget.displaystyle.UiConfig;
 import org.chromium.ui.base.DeviceFormFactor;
+import org.chromium.ui.text.NoUnderlineClickableSpan;
+import org.chromium.ui.text.SpanApplier;
 
 /**
  * The native new tab page, represented by some basic data such as title and url, and an Android
@@ -284,6 +288,7 @@ public class NewTabPageView extends FrameLayout implements TileGroup.Observer {
 
         initializeSearchBoxTextView();
         initializeVoiceSearchButton();
+        initializeChromeHomePromo();
         initializeLayoutChangeListeners();
         setSearchProviderInfo(searchProviderHasLogo, searchProviderIsGoogle);
         mSearchProviderLogoView.showSearchProviderInitialView();
@@ -409,6 +414,25 @@ public class NewTabPageView extends FrameLayout implements TileGroup.Observer {
         TraceEvent.end(TAG + ".initializeVoiceSearchButton()");
     }
 
+    private void initializeChromeHomePromo() {
+        if (!ChromeFeatureList.isEnabled(ChromeFeatureList.CHROME_HOME_PROMO)) return;
+
+        NoUnderlineClickableSpan link = new NoUnderlineClickableSpan() {
+            @Override
+            public void onClick(View view) {
+                new ChromeHomePromoDialog(mActivity).show();
+            }
+        };
+
+        TextView textView = mNewTabPageLayout.findViewById(R.id.chrome_home_promo_text);
+        textView.setText(
+                SpanApplier.applySpans(getResources().getString(R.string.ntp_chrome_home_promo),
+                        new SpanApplier.SpanInfo("<link>", "</link>", link)));
+        textView.setMovementMethod(LinkMovementMethod.getInstance());
+        mNewTabPageLayout.findViewById(R.id.chrome_home_promo_container)
+                .setVisibility(View.VISIBLE);
+    }
+
     private void initializeLayoutChangeListeners() {
         TraceEvent.begin(TAG + ".initializeLayoutChangeListeners()");
         mNewTabPageLayout.addOnLayoutChangeListener(new OnLayoutChangeListener() {
@@ -642,8 +666,13 @@ public class NewTabPageView extends FrameLayout implements TileGroup.Observer {
         for (int i = 0; i < childCount; i++) {
             View child = mNewTabPageLayout.getChildAt(i);
             if (child == mSiteSectionViewHolder.itemView) break;
+
             // Don't change the visibility of a ViewStub as that will automagically inflate it.
             if (child instanceof ViewStub) continue;
+
+            // Skip the Chrome Home promo.
+            if (child.getId() == R.id.chrome_home_promo_container) continue;
+
             if (child == mSearchProviderLogoView) {
                 child.setVisibility(logoVisibility);
             } else {

chrome/android/java/strings/android_chrome_strings.grd

@@ -2394,6 +2394,9 @@ To obtain new licenses, connect to the internet and play your downloaded content
       <message name="IDS_ACCESSIBILITY_NTP_OFFLINE_BADGE" desc="Content description for the badge that indicates offline availability of a most visited item or content suggestion on the new tab page.">
         Available offline
       </message>
+      <message name="IDS_NTP_CHROME_HOME_PROMO" desc="Text below the search box on the New Tab Page that encourages the user to try Chrome Home. Part of the text is a link to open the promo dialog.">
+        Be the first to <ph name="BEGIN_LINK">&lt;link&gt;</ph>try the new Chrome<ph name="END_LINK">&lt;/link&gt;</ph>
+      </message>
       <message name="IDS_NTP_LEARN_MORE_ABOUT_SUGGESTED_CONTENT" desc="Text in the footer of the New Tab Page. Part of the text is a link to a help center page where the user can learn more about suggested content.">
         <ph name="BEGIN_LINK">&lt;link&gt;</ph>Learn more<ph name="END_LINK">&lt;/link&gt;</ph> about suggested content
       </message>