[ContextualSearch] Adds long press promo for Contextual Search.

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchPolicy.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.contextualsearch;
 
 import android.content.Context;
 
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.browser.ChromeVersionInfo;
@@ skipping 18 matching lines @@
 
     private static ContextualSearchPolicy sInstance;
 
     private final ChromePreferenceManager mPreferenceManager;
 
     // Members used only for testing purposes.
     private boolean mDidOverrideDecidedStateForTesting;
     private boolean mDecidedStateForTesting;
     private boolean mDidResetCounters;
 
-    static ContextualSearchPolicy getInstance(Context context) {
+    public static ContextualSearchPolicy getInstance(Context context) {
         if (sInstance == null) {
             sInstance = new ContextualSearchPolicy(context);
         }
         return sInstance;
     }
 
     /**
      * Private constructor -- use {@link #getInstance} to get the singleton instance.
      * @param context The Android Context.
      */
@@ skipping 93 matching lines @@
     }
 
     /**
      * @return Whether the Opt-out promo is available to be shown in any panel.
      */
     boolean isPromoAvailable() {
         return isUserUndecided();
     }
 
     /**
+     * @return Whether the Peek promo is available to be shown above the Search Bar.
+     */
+    public boolean isPeekPromoAvailable(ContextualSearchSelectionController controller) {
+        // Allow Promo to be forcefully enabled for testing.
+        if (ContextualSearchFieldTrial.isPeekPromoForced()) return true;
+
+        // Check for several conditions to determine whether the Peek Promo is available.
+
+        // 1) Enabled by Finch.
+        if (!ContextualSearchFieldTrial.isPeekPromoEnabled()) return false;
+
+        // 2) If the Panel was never opened.
+        if (getPromoOpenCount() > 0) return false;
+
+        // 3) User has not opted in.
+        if (!isUserUndecided()) return false;
+
+        // 4) Selection was caused by a long press.
+        if (controller.getSelectionType() != SelectionType.LONG_PRESS) return false;
+
+        // 5) Promo was not shown more than the maximum number of times defined by Finch.
+        final int maxShowCount = ContextualSearchFieldTrial.getPeekPromoMaxShowCount();
+        final int peekPromoShowCount = mPreferenceManager.getContextualSearchPeekPromoShowCount();
+        if (peekPromoShowCount >= maxShowCount) return false;
+
+        // 6) Only then, show the promo.
+        return true;
+    }
+
+    /**
+     * Register that the Peek Promo was seen.
+     */
+    public void registerPeekPromoSeen() {
+        final int peekPromoShowCount = mPreferenceManager.getContextualSearchPeekPromoShowCount();
+        mPreferenceManager.setContextualSearchPeekPromoShowCount(peekPromoShowCount + 1);
+    }
+
+    /**
      * Registers that a tap has taken place by incrementing tap-tracking counters.
      */
     void registerTap() {
         if (isPromoAvailable()) {
             DisableablePromoTapCounter promoTapCounter = getPromoTapCounter();
             // Bump the counter only when it is still enabled.
             if (promoTapCounter.isEnabled()) {
                 promoTapCounter.increment();
             }
         }
@@ skipping 221 matching lines @@
 
     /**
      * @return The limit of the number of taps to resolve using search term resolution.
      */
     private int getTapResolveLimit() {
         return isUserUndecided()
                 ? ContextualSearchFieldTrial.getTapResolveLimitForUndecided()
                 : ContextualSearchFieldTrial.getTapResolveLimitForDecided();
     }
 }