Use LeakCanary for all Android Service instances

base/android/java/src/org/chromium/base/LeakCanaryUtil.java

Index: base/android/java/src/org/chromium/base/LeakCanaryUtil.java
diff --git a/base/android/java/src/org/chromium/base/LeakCanaryUtil.java b/base/android/java/src/org/chromium/base/LeakCanaryUtil.java
new file mode 100644
index 0000000000000000000000000000000000000000..de539da659884f8f5148ffd41089e57f5826a862
--- /dev/null
+++ b/base/android/java/src/org/chromium/base/LeakCanaryUtil.java
@@ -0,0 +1,44 @@
+// 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.base;
+
+import android.app.Application;
+
+import com.squareup.leakcanary.LeakCanary;
+import com.squareup.leakcanary.RefWatcher;
+
+import org.chromium.base.annotations.RemovableInRelease;
+
+/**
+ * Wrapper functions for LeakCanary, which makes sure that all LeakCanary-related calls are
+ * able to be stripped by Proguard.
+ */
+public final class LeakCanaryUtil {
+    private static final String TAG = "LeakCanaryUtil";
+    private static RefWatcher sRefWatcher;
+
+    private LeakCanaryUtil() {
+        // Static only access
+    }
+
+    @RemovableInRelease
+    public static void initialize(Application appContext) {
+        if (sRefWatcher != null) {
+            throw new IllegalStateException("LeakCanaryUtil.initialize() called multiple times.");
+        }
+        Log.d(TAG, "LeakCanary initialized.");
+        // Watch that Activity objects are not retained after their onDestroy() has been called.
+        // This is a no-op in release builds.
+        sRefWatcher = LeakCanary.install(appContext);
+    }
+
+    @RemovableInRelease
+    public static void watch(Object obj) {
+        if (sRefWatcher == null) {
+            throw new IllegalStateException("LeakCanaryUtil.initialize() not yet called.");
+        }
+        sRefWatcher.watch(obj);
+    }
+}