Move InstantApps stuff into a separate package.

chrome/android/java/src/org/chromium/chrome/browser/InstantAppsHandler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/InstantAppsHandler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/InstantAppsHandler.java b/chrome/android/java/src/org/chromium/chrome/browser/InstantAppsHandler.java
deleted file mode 100644
index 3515dc84b7f0f7743c628bdbea66fdeba6a102f9..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/InstantAppsHandler.java
+++ /dev/null
@@ -1,225 +0,0 @@
-// Copyright 2016 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;
-
-import android.content.Context;
-import android.content.Intent;
-import android.os.StrictMode;
-import android.os.SystemClock;
-import android.provider.Browser;
-
-import org.chromium.base.CommandLine;
-import org.chromium.base.FieldTrialList;
-import org.chromium.base.Log;
-import org.chromium.chrome.browser.externalnav.ExternalNavigationDelegateImpl;
-import org.chromium.chrome.browser.metrics.LaunchMetrics.TimesHistogramSample;
-import org.chromium.chrome.browser.net.spdyproxy.DataReductionProxySettings;
-import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
-import org.chromium.chrome.browser.util.IntentUtils;
-
-import java.util.concurrent.TimeUnit;
-
-/** A launcher for Instant Apps. */
-public class InstantAppsHandler {
-    private static final String TAG = "InstantAppsHandler";
-
-    private static final Object INSTANCE_LOCK = new Object();
-    private static InstantAppsHandler sInstance;
-
-    private static final String DO_NOT_LAUNCH_EXTRA =
-            "com.google.android.gms.instantapps.DO_NOT_LAUNCH_INSTANT_APP";
-
-    private static final String CUSTOM_APPS_INSTANT_APP_EXTRA =
-            "android.support.customtabs.extra.EXTRA_ENABLE_INSTANT_APPS";
-
-    private static final String INSTANT_APP_START_TIME_EXTRA =
-            "org.chromium.chrome.INSTANT_APP_START_TIME";
-
-    /** Finch experiment name. */
-    private static final String INSTANT_APPS_EXPERIMENT_NAME = "InstantApps";
-
-    /** Finch experiment group which is enabled for instant apps. */
-    private static final String INSTANT_APPS_ENABLED_ARM = "InstantAppsEnabled";
-
-    /** Finch experiment group which is disabled for instant apps. */
-    private static final String INSTANT_APPS_DISABLED_ARM = "InstantAppsDisabled";
-
-    /** A histogram to record how long each handleIntent() call took. */
-    private static final TimesHistogramSample sHandleIntentDuration = new TimesHistogramSample(
-            "Android.InstantApps.HandleIntentDuration", TimeUnit.MILLISECONDS);
-
-    /** A histogram to record how long the fallback intent roundtrip was. */
-    private static final TimesHistogramSample sFallbackIntentTimes = new TimesHistogramSample(
-            "Android.InstantApps.FallbackDuration", TimeUnit.MILLISECONDS);
-
-    /** A histogram to record how long the GMS Core API call took. */
-    private static final TimesHistogramSample sInstantAppsApiCallTimes = new TimesHistogramSample(
-            "Android.InstantApps.ApiCallDuration", TimeUnit.MILLISECONDS);
-
-
-    /** @return The singleton instance of {@link InstantAppsHandler}. */
-    public static InstantAppsHandler getInstance(ChromeApplication application) {
-        synchronized (INSTANCE_LOCK) {
-            if (sInstance == null) {
-                sInstance = application.createInstantAppsHandler();
-            }
-        }
-        return sInstance;
-    }
-
-    /**
-     * Check the cached value to figure out if the feature is enabled. We have to use the cached
-     * value because native library hasn't yet been loaded.
-     * @param context The application context.
-     * @return Whether the feature is enabled.
-     */
-    private boolean isEnabled(Context context) {
-        // Will go away once the feature is enabled for everyone by default.
-        StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
-        try {
-            return ChromePreferenceManager.getInstance(context).getCachedInstantAppsEnabled();
-        } finally {
-            StrictMode.setThreadPolicy(oldPolicy);
-        }
-    }
-
-    /**
-     * Record how long the handleIntent() method took.
-     * @param startTime The timestamp for handleIntent start time.
-     */
-    private void recordHandleIntentDuration(long startTime) {
-        sHandleIntentDuration.record(SystemClock.elapsedRealtime() - startTime);
-    }
-
-    /**
-     * Record the amount of time spent in the instant apps API call.
-     * @param startTime The time at which we started doing computations.
-     */
-    protected void recordInstantAppsApiCallTime(long startTime) {
-        sInstantAppsApiCallTimes.record(SystemClock.elapsedRealtime() - startTime);
-    }
-
-    /**
-     * In the case Chrome is called through the fallback mechanism from Instant Apps, record the
-     * amount of time the whole trip took.
-     * @param intent The current intent.
-     */
-    private void maybeRecordFallbackDuration(Intent intent) {
-        if (intent.hasExtra(INSTANT_APP_START_TIME_EXTRA)) {
-            Long startTime = intent.getLongExtra(INSTANT_APP_START_TIME_EXTRA, 0);
-            if (startTime != 0) {
-                sFallbackIntentTimes.record(SystemClock.elapsedRealtime() - startTime);
-            }
-        }
-    }
-
-    /**
-     * Cache whether the Instant Apps feature is enabled.
-     * This should only be called with the native library loaded.
-     */
-    public void cacheInstantAppsEnabled(Context context) {
-        boolean isEnabled = false;
-        boolean wasEnabled = isEnabled(context);
-        CommandLine instance = CommandLine.getInstance();
-        if (instance.hasSwitch(ChromeSwitches.DISABLE_APP_LINK)) {
-            isEnabled = false;
-        } else if (instance.hasSwitch(ChromeSwitches.ENABLE_APP_LINK)) {
-            isEnabled = true;
-        } else {
-            String experiment = FieldTrialList.findFullName(INSTANT_APPS_EXPERIMENT_NAME);
-            if (INSTANT_APPS_DISABLED_ARM.equals(experiment)) {
-                isEnabled = false;
-            } else if (INSTANT_APPS_ENABLED_ARM.equals(experiment)) {
-                isEnabled = true;
-            }
-        }
-
-        if (isEnabled != wasEnabled) {
-            ChromePreferenceManager.getInstance(context).setCachedInstantAppsEnabled(isEnabled);
-        }
-    }
-
-    /** Handle incoming intent. */
-    public boolean handleIncomingIntent(Context context, Intent intent,
-            boolean isCustomTabsIntent) {
-        long startTimeStamp = SystemClock.elapsedRealtime();
-        boolean result = handleIncomingIntentInternal(context, intent, isCustomTabsIntent,
-                startTimeStamp);
-        recordHandleIntentDuration(startTimeStamp);
-        return result;
-    }
-
-    private boolean handleIncomingIntentInternal(
-            Context context, Intent intent, boolean isCustomTabsIntent, long startTime) {
-        if (!isEnabled(context)
-                || IntentUtils.safeGetBooleanExtra(intent, DO_NOT_LAUNCH_EXTRA, false)
-                || IntentUtils.safeGetBooleanExtra(
-                        intent, IntentHandler.EXTRA_OPEN_NEW_INCOGNITO_TAB, false)
-                || (isCustomTabsIntent && !IntentUtils.safeGetBooleanExtra(
-                        intent, CUSTOM_APPS_INSTANT_APP_EXTRA, false))
-                || DataReductionProxySettings.isEnabledBeforeNativeLoad(context)
-                || isIntentFromChrome(context, intent)
-                || (intent.getAction() != Intent.ACTION_VIEW)) {
-            Log.i(TAG, "Not handling with Instant Apps");
-            return false;
-        }
-
-        maybeRecordFallbackDuration(intent);
-
-        // Used to search for the intent handlers. Needs null component to return correct results.
-        Intent intentCopy = new Intent(intent);
-        intentCopy.setComponent(null);
-
-        if (!(isCustomTabsIntent || isChromeDefaultHandler(context))
-                || ExternalNavigationDelegateImpl.isPackageSpecializedHandler(
-                        context, null, intentCopy)) {
-            // Chrome is not the default browser or a specialized handler exists.
-            Log.i(TAG, "Not handling with Instant Apps because Chrome is not default or "
-                    + "there's a specialized handler");
-            return false;
-        }
-
-        Intent callbackIntent = new Intent(intent);
-        callbackIntent.putExtra(DO_NOT_LAUNCH_EXTRA, true);
-        callbackIntent.putExtra(INSTANT_APP_START_TIME_EXTRA, startTime);
-
-        return tryLaunchingInstantApp(context, intent, isCustomTabsIntent, callbackIntent);
-    }
-
-    /**
-     * Attempts to launch an Instant App, if possible.
-     * @param context The activity context.
-     * @param intent The incoming intent.
-     * @param isCustomTabsIntent Whether the intent is for a CustomTab.
-     * @param fallbackIntent The intent that will be launched by Instant Apps in case of failure to
-     *        load.
-     * @return Whether an Instant App was launched.
-     */
-    protected boolean tryLaunchingInstantApp(
-            Context context, Intent intent, boolean isCustomTabsIntent, Intent fallbackIntent) {
-        return false;
-    }
-
-    /**
-     * @return Whether the intent was fired from Chrome. This happens when the user gets a
-     *         disambiguation dialog and chooses to stay in Chrome.
-     */
-    private boolean isIntentFromChrome(Context context, Intent intent) {
-        return context.getPackageName().equals(IntentUtils.safeGetStringExtra(
-                intent, Browser.EXTRA_APPLICATION_ID))
-                // We shouldn't leak internal intents with authentication tokens
-                || IntentHandler.wasIntentSenderChrome(intent, context);
-    }
-
-    /** @return Whether Chrome is the default browser on the device. */
-    private boolean isChromeDefaultHandler(Context context) {
-        StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
-        try {
-            return ChromePreferenceManager.getInstance(context).getCachedChromeDefaultBrowser();
-        } finally {
-            StrictMode.setThreadPolicy(oldPolicy);
-        }
-    }
-}