Merge java_staging/src into java/src.

chrome/android/java_staging/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
deleted file mode 100644
index 65a0c77d30e6927840f52fe2be119e1fa7d77168..0000000000000000000000000000000000000000
--- a/chrome/android/java_staging/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
+++ /dev/null
@@ -1,263 +0,0 @@
-// 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 android.text.TextUtils;
-
-import org.chromium.base.CommandLine;
-import org.chromium.base.SysUtils;
-import org.chromium.chrome.browser.ChromeSwitches;
-import org.chromium.chrome.browser.ChromeVersionInfo;
-import org.chromium.components.variations.VariationsAssociatedData;
-
-import java.util.Arrays;
-import java.util.Locale;
-
-/**
- * Provides Field Trial support for the Contextual Search application within Chrome for Android.
- */
-public class ContextualSearchFieldTrial {
-    private static final String CONTEXTUAL_SEARCH_FIELD_TRIAL_NAME = "ContextualSearch";
-    private static final String CONTEXTUAL_SEARCH_ENABLED_PARAM = "enabled";
-    private static final String CONTEXTUAL_SEARCH_ENABLED_VALUE = "true";
-    private static final String CONTEXTUAL_SEARCH_DISABLE_FOR_CJK = "disable_for_cjk";
-    private static final String CONTEXTUAL_SEARCH_DISABLE_FOR_NON_ENGLISH =
-            "disable_for_non_english";
-    private static final String CONTEXTUAL_SEARCH_PROMO_ON_LONGPRESS_ONLY =
-            "promo_on_longpress_only";
-    static final String CONTEXTUAL_SEARCH_PROMO_ON_LIMITED_TAPS =
-            "promo_on_limited_taps";
-    static final String CONTEXTUAL_SEARCH_TAP_TRIGGERED_PROMO_LIMIT =
-            "tap_triggered_promo_limit";
-    private static final String CONTEXTUAL_SEARCH_NAVIGATION_DETECTION_DELAY =
-            "tap_navigation_detection_delay";
-    static final String CONTEXTUAL_SEARCH_TAP_RESOLVE_LIMIT_FOR_DECIDED =
-            "tap_resolve_limit_for_decided";
-    static final String CONTEXTUAL_SEARCH_TAP_PREFETCH_LIMIT_FOR_DECIDED =
-            "tap_prefetch_limit_for_decided";
-    static final String CONTEXTUAL_SEARCH_TAP_RESOLVE_LIMIT_FOR_UNDECIDED =
-            "tap_resolve_limit_for_undecided";
-    static final String CONTEXTUAL_SEARCH_TAP_PREFETCH_LIMIT_FOR_UNDECIDED =
-            "tap_prefetch_limit_for_undecided";
-
-    private static final String[] CJK_LANGUAGE_CODES = {"zh", "ja", "ko"};
-    private static final String ENGLISH_LANGUAGE_CODE = "en";
-
-    // The default navigation-detection-delay in milliseconds.
-    private static final int DEFAULT_TAP_NAVIGATION_DETECTION_DELAY = 16;
-
-    private static final int UNLIMITED_TAPS = -1;
-    private static final int DEFAULT_TAP_RESOLVE_LIMIT_FOR_DECIDED = UNLIMITED_TAPS;
-    private static final int DEFAULT_TAP_PREFETCH_LIMIT_FOR_DECIDED = UNLIMITED_TAPS;
-    private static final int DEFAULT_TAP_RESOLVE_LIMIT_FOR_UNDECIDED = 100;
-    private static final int DEFAULT_TAP_PREFETCH_LIMIT_FOR_UNDECIDED = 10;
-
-    // Cached value to avoid repeated and redundant JNI operations.
-    private static Boolean sEnabled;
-
-    /**
-     * Don't instantiate.
-     */
-    private ContextualSearchFieldTrial() {}
-
-    /**
-     * Checks the current Variations parameters associated with the active group as well as the
-     * Chrome preference to determine if the service is enabled.
-     * @return Whether Contextual Search is enabled or not.
-     */
-    public static boolean isEnabled(Context context) {
-        if (sEnabled == null) {
-            sEnabled = detectEnabled(context);
-        }
-        return sEnabled.booleanValue();
-    }
-
-    private static boolean detectEnabled(Context context) {
-        if (SysUtils.isLowEndDevice()) {
-            return false;
-        }
-
-        // This is used for instrumentation tests (i.e. it is not a user-flippable flag). We cannot
-        // use Variations params because in the test harness, the initialization comes before any
-        // native methods are available. And the ContextualSearchManager is initialized very early
-        // in the Chrome initialization.
-        if (CommandLine.getInstance().hasSwitch(
-                    ChromeSwitches.ENABLE_CONTEXTUAL_SEARCH_FOR_TESTING)) {
-            return true;
-        }
-
-        // Allow this user-flippable flag to disable the feature.
-        if (CommandLine.getInstance().hasSwitch(ChromeSwitches.DISABLE_CONTEXTUAL_SEARCH)) {
-            return false;
-        }
-
-        // Allow this user-flippable flag to override disabling due to language.
-        if (CommandLine.getInstance().hasSwitch(ChromeSwitches.ENABLE_CONTEXTUAL_SEARCH)) {
-            return true;
-        }
-
-        String languageCode = Locale.getDefault().getLanguage();
-        if (getBooleanParam(CONTEXTUAL_SEARCH_DISABLE_FOR_NON_ENGLISH)
-                && !languageCode.equals(ENGLISH_LANGUAGE_CODE)) {
-            return false;
-        }
-
-        if (getBooleanParam(CONTEXTUAL_SEARCH_DISABLE_FOR_CJK)
-                && Arrays.asList(CJK_LANGUAGE_CODES).contains(languageCode)) {
-            return false;
-        }
-
-        if (ChromeVersionInfo.isLocalBuild()) return true;
-
-        return getBooleanParam(CONTEXTUAL_SEARCH_ENABLED_PARAM);
-    }
-
-    /**
-     * Gets whether the promo should be triggered on longpress only.
-     * @return {@code true} iff Finch says we should trigger the promo only on touch-and-hold.
-     */
-    static boolean isPromoLongpressTriggeredOnly() {
-        return getBooleanParam(CONTEXTUAL_SEARCH_PROMO_ON_LONGPRESS_ONLY);
-    }
-
-    /**
-     * @return Whether the promo should be triggered by a limited number of taps.
-     */
-    public static boolean isPromoLimitedByTapCounts() {
-        return getBooleanParam(CONTEXTUAL_SEARCH_PROMO_ON_LIMITED_TAPS);
-    }
-
-    /**
-     * @return The maximum number of times the promo can be triggered by a tap, or
-     * {@code ContextualSearchUma#PROMO_TAPS_REMAINING_INVALID} if no value is present in the finch
-     * configuration.
-     */
-    static int getPromoTapTriggeredLimit() {
-        return getIntParamValueOrDefault(CONTEXTUAL_SEARCH_TAP_TRIGGERED_PROMO_LIMIT,
-                UNLIMITED_TAPS);
-    }
-
-    /**
-     * @return The delay to use for navigation-detection when triggering on a Tap.
-     */
-    static int getNavigationDetectionDelay() {
-        return getIntParamValueOrDefault(CONTEXTUAL_SEARCH_NAVIGATION_DETECTION_DELAY,
-                DEFAULT_TAP_NAVIGATION_DETECTION_DELAY);
-    }
-
-    /**
-     * @return Whether Search Term Resolution in response to a Tap gesture is limited for decided
-     *         users.
-     */
-    static boolean isTapResolveLimitedForDecided() {
-        return getTapResolveLimitForDecided()
-                != ContextualSearchFieldTrial.UNLIMITED_TAPS;
-    }
-
-    /**
-     * @return Whether prefetch in response to a Tap gesture is limited for decided users.
-     */
-    static boolean isTapPrefetchLimitedForDecided() {
-        return getTapPrefetchLimitForDecided()
-                != ContextualSearchFieldTrial.UNLIMITED_TAPS;
-    }
-
-    /**
-     * @return Whether Search Term Resolution in response to a Tap gesture is limited for undecided
-     *         users.
-     */
-    static boolean isTapResolveLimitedForUndecided() {
-        return getTapResolveLimitForUndecided()
-                != ContextualSearchFieldTrial.UNLIMITED_TAPS;
-    }
-
-    /**
-     * @return Whether prefetch in response to a Tap gesture is limited for undecided users.
-     */
-    static boolean isTapPrefetchLimitedForUndecided() {
-        return getTapPrefetchLimitForUndecided()
-                != ContextualSearchFieldTrial.UNLIMITED_TAPS;
-    }
-    /**
-     * @return The limit on the number of taps to resolve for decided users, or the default if no
-     *         value is present in the Finch configuration.
-     */
-    static int getTapResolveLimitForDecided() {
-        return getIntParamValueOrDefault(CONTEXTUAL_SEARCH_TAP_RESOLVE_LIMIT_FOR_DECIDED,
-                DEFAULT_TAP_RESOLVE_LIMIT_FOR_DECIDED);
-    }
-
-    /**
-     * @return The limit on the number of prefetches to issue for decided users, or the default
-     *         if no value is present.
-     */
-    static int getTapPrefetchLimitForDecided() {
-        return getIntParamValueOrDefault(CONTEXTUAL_SEARCH_TAP_PREFETCH_LIMIT_FOR_DECIDED,
-                DEFAULT_TAP_PREFETCH_LIMIT_FOR_DECIDED);
-    }
-
-    /**
-     * @return The limit on the number of taps to resolve for undecided users, or the default if no
-     *         value is present in the Finch configuration.
-     */
-    static int getTapResolveLimitForUndecided() {
-        return getIntParamValueOrDefault(CONTEXTUAL_SEARCH_TAP_RESOLVE_LIMIT_FOR_UNDECIDED,
-                DEFAULT_TAP_RESOLVE_LIMIT_FOR_UNDECIDED);
-    }
-
-    /**
-     * @return The limit on the number of prefetches to issue for undecided users, or the default
-     *         if no value is present.
-     */
-    static int getTapPrefetchLimitForUndecided() {
-        return getIntParamValueOrDefault(CONTEXTUAL_SEARCH_TAP_PREFETCH_LIMIT_FOR_UNDECIDED,
-                DEFAULT_TAP_PREFETCH_LIMIT_FOR_UNDECIDED);
-    }
-
-    // --------------------------------------------------------------------------------------------
-    // Helpers.
-    // --------------------------------------------------------------------------------------------
-
-    /**
-     * Gets a boolean Finch parameter, assuming the <paramName>="true" format.  Also checks for a
-     * command-line switch with the same name, for easy local testing.
-     * @param paramName The name of the Finch parameter (or command-line switch) to get a value for.
-     * @return Whether the Finch param is defined with a value "true", if there's a command-line
-     *         flag present with any value.
-     */
-    private static boolean getBooleanParam(String paramName) {
-        if (CommandLine.getInstance().hasSwitch(paramName)) {
-            return true;
-        }
-        return TextUtils.equals(CONTEXTUAL_SEARCH_ENABLED_VALUE,
-                VariationsAssociatedData.getVariationParamValue(CONTEXTUAL_SEARCH_FIELD_TRIAL_NAME,
-                        paramName));
-    }
-
-    /**
-     * Returns an integer value for a Finch parameter, or the default value if no parameter exists
-     * in the current configuration.  Also checks for a command-line switch with the same name.
-     * @param paramName The name of the Finch parameter (or command-line switch) to get a value for.
-     * @param defaultValue The default value to return when there's no param or switch.
-     * @return An integer value -- either the param or the default.
-     */
-    private static int getIntParamValueOrDefault(String paramName, int defaultValue) {
-        String value = CommandLine.getInstance().getSwitchValue(paramName);
-        if (TextUtils.isEmpty(value)) {
-            value = VariationsAssociatedData.getVariationParamValue(
-                    CONTEXTUAL_SEARCH_FIELD_TRIAL_NAME, paramName);
-        }
-        if (!TextUtils.isEmpty(value)) {
-            try {
-                return Integer.parseInt(value);
-            } catch (NumberFormatException e) {
-                return defaultValue;
-            }
-        }
-
-        return defaultValue;
-    }
-}