Add title to the incognito interstitial.

Screenshot: https://screenshot.googleplex.com/6boukrmENqmXgtP
Bug: 1127852
Change-Id: I672b1b65ddcfbe57d70797c927d5c6c00c1de76d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2409905Reviewed-by: Alice Wang <aliceywang@chromium.org>
Commit-Queue: Rohit Agarwal <roagarwal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806964}

chrome/android/java/src/org/chromium/chrome/browser/signin/account_picker/AccountPickerBottomSheetView.java

@@ -175,6 +175,7 @@ class AccountPickerBottomSheetView implements BottomSheetContent {
     void setUpIncognitoInterstitialView() {
         // TODO(crbug.com/1103262): Setup the incognito interstitial strings.
         mLogoImage.setImageResource(R.drawable.location_bar_incognito_badge);
+        mAccountPickerTitle.setText(R.string.incognito_interstitial_title);
         mIncognitoInterstitialView.setVisibility(View.VISIBLE);
 
         mAccountPickerSubtitle.setVisibility(View.GONE);

chrome/android/javatests/src/org/chromium/chrome/browser/signin/AccountPickerBottomSheetTest.java

@@ -409,7 +409,9 @@ public class AccountPickerBottomSheetTest {
 
     private void checkIncognitoInterstitialSheet() {
         onView(withId(R.id.account_picker_bottom_sheet_logo)).check(matches(isDisplayed()));
-        onView(withId(R.id.account_picker_bottom_sheet_title)).check(matches(isDisplayed()));
+        onView(withId(R.id.account_picker_bottom_sheet_title))
+                .check(matches(isDisplayed()))
+                .check(matches(withText(R.string.incognito_interstitial_title)));
         onView(withId(R.id.account_picker_bottom_sheet_subtitle))
                 .check(matches(not(isDisplayed())));
         onView(withId(R.id.account_picker_horizontal_divider)).check(matches(not(isDisplayed())));

chrome/browser/ui/android/strings/android_chrome_strings.grd

@@ -2415,6 +2415,11 @@ To change this setting, <ph name="BEGIN_LINK">&lt;resetlink&gt;</ph>reset sync<p
         Waiting for Google Play Services to finish updating
       </message>
 
+      <!-- Strings for Incognito Interstitial. -->
+      <message name="IDS_INCOGNITO_INTERSTITIAL_TITLE" desc="The title of the incognito interstitial bottom sheet.">
+        Use incognito to sign in temporarily
+      </message>
+
       <!-- Strings for Streamlined Signin and Unified Consent. -->
       <message name="IDS_SIGNIN_TITLE" desc="Title for the screen that asks users to sign-in and turn on Sync. [CHAR-LIMIT=27]">
         Turn on sync?

chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_INCOGNITO_INTERSTITIAL_TITLE.png.sha1

+adc3b35662e21a7c4b2e4af2e5c3a1fb909bd9d6
\ No newline at end of file