[ContextualSearch] Adds long press promo for Contextual Search.

chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
index 1a08c588aa9d30bd6650c81f0db1ce6d4225c91e..1cb1a0e9ec803a271defc847f909e988f8dc16f8 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/ChromePreferenceManager.java
@@ -33,6 +33,8 @@ public class ChromePreferenceManager {
     private static final String CONTEXTUAL_SEARCH_TAP_TRIGGERED_PROMO_COUNT =
             "contextual_search_tap_triggered_promo_count";
     private static final String CONTEXTUAL_SEARCH_TAP_COUNT = "contextual_search_tap_count";
+    private static final String CONTEXTUAL_SEARCH_PEEK_PROMO_SHOW_COUNT =
+            "contextual_search_peek_promo_show_count";
     private static final String ENABLE_CUSTOM_TABS = "enable_custom_tabs";
 
     private static final int SIGNIN_PROMO_CYCLE_IN_DAYS = 120;
@@ -234,6 +236,21 @@ public class ChromePreferenceManager {
     }
 
     /**
+     * @return Number of times the Peek Promo was shown.
+     */
+    public int getContextualSearchPeekPromoShowCount() {
+        return mSharedPreferences.getInt(CONTEXTUAL_SEARCH_PEEK_PROMO_SHOW_COUNT, 0);
+    }
+
+    /**
+     * Sets the number of times the Peek Promo was shown.
+     * @param count Number of times the Peek Promo was shown.
+     */
+    public void setContextualSearchPeekPromoShowCount(int count) {
+        writeInt(CONTEXTUAL_SEARCH_PEEK_PROMO_SHOW_COUNT, count);
+    }
+
+    /**
      * @return Number of times the promo was triggered to peek by a tap gesture, or a negative value
      *         if in the disabled state.
      */