Add the Physical Web to Chrome on Android

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java

Index: chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
new file mode 100644
index 0000000000000000000000000000000000000000..367f229ef9049377e641cc347dad7d93b3d2e993
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+++ b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
@@ -0,0 +1,39 @@
+// 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.physicalweb;
+
+import org.chromium.base.CommandLine;
+import org.chromium.chrome.browser.ChromeApplication;
+import org.chromium.chrome.browser.ChromeSwitches;
+import org.chromium.chrome.browser.ChromeVersionInfo;
+
+/**
+ * This class provides the basic interface to the Physical Web feature.
+ */
+public class PhysicalWeb {
+    /**
+     * Evaluate whether the environment is one in which the Physical Web should
+     * be enabled.
+     * @return true if the PhysicalWeb should be enabled
+     */
+    public static boolean featureIsEnabled() {
+        boolean allowedChannel =
+                ChromeVersionInfo.isLocalBuild() || ChromeVersionInfo.isDevBuild();
+        boolean switchEnabled =
+                CommandLine.getInstance().hasSwitch(ChromeSwitches.ENABLE_PHYSICAL_WEB);
+        return allowedChannel && switchEnabled;
+    }
+
+    /**
+     * Start the Physical Web feature.
+     * At the moment, this only enables URL discovery over BLE.
+     * @param application An instance of {@link ChromeApplication}, used to get the
+     * appropriate PhysicalWebBleClient implementation.
+     */
+    public static void startPhysicalWeb(ChromeApplication application) {
+        PhysicalWebBleClient physicalWebBleClient = PhysicalWebBleClient.getInstance(application);
+        physicalWebBleClient.subscribe();
+    }
+}