WebView Metrics client implementation (Chromium part)

android_webview/java/src/org/chromium/android_webview/AwMetricsServiceClient.java

Index: android_webview/java/src/org/chromium/android_webview/AwMetricsServiceClient.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwMetricsServiceClient.java b/android_webview/java/src/org/chromium/android_webview/AwMetricsServiceClient.java
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index 0000000000000000000000000000000000000000..83bd7e99cb494dc4fe09668b6363d72858b8a398
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+++ b/android_webview/java/src/org/chromium/android_webview/AwMetricsServiceClient.java
@@ -0,0 +1,60 @@
+// 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.android_webview;
+
+import android.content.Context;
+import android.webkit.ValueCallback;
+
+import org.chromium.base.Log;
+import org.chromium.base.annotations.JNINamespace;
+
+import java.lang.reflect.InvocationTargetException;
+
+/**
+ * Java twin of the homonymous C++ class. The Java side is only responsible for
+ * switching metrics on and off. Since the setting is a platform feature, it
+ * must be obtained through PlatformServiceBridge.
+ */
+@JNINamespace("android_webview")
+public class AwMetricsServiceClient {
+    private static final String TAG = "AwMetricsServiceClient";
+    private static final String PLATFORM_SERVICE_BRIDGE_CLASS =
+            "com.android.webview.chromium.PlatformServiceBridgeGoogle";
+
+    private PlatformServiceBridge mPlatformServiceBridge;
+
+    public AwMetricsServiceClient(Context applicationContext) {
+        mPlatformServiceBridge = getPlatformServiceBridge(applicationContext);
+
+        mPlatformServiceBridge.setMetricsSettingListener(new ValueCallback<Boolean>() {
+            public void onReceiveValue(Boolean enabled) {
+                Log.d("aoeu", "AwMetricsServiceClient onReceiveValue " + enabled);
+                nativeSetMetricsEnabled(enabled.booleanValue());
+            }
+        });
+    }
+
+    private static PlatformServiceBridge getPlatformServiceBridge(Context applicationContext) {
+        // If this is gmail, try to get the Google service bridge.
+        if ("com.google.android.gm".equals(applicationContext.getPackageName())) {
+            Log.i(TAG, "Package is gmail; getting " + PLATFORM_SERVICE_BRIDGE_CLASS);
+            try {
+                Class<?> cls = Class.forName(PLATFORM_SERVICE_BRIDGE_CLASS);
+                return (PlatformServiceBridge)
+                        cls.getDeclaredConstructor(Context.class).newInstance(applicationContext);
+            } catch (InvocationTargetException e) {
+                Log.d(TAG, "instantiation failed invocation", e.getCause());
+            } catch (Exception e) {
+                Log.d(TAG, "instantiation failed", e);
+            }
+        }
+
+        // If this is not gmail or getting the preferred service
+        // bridge failed, get the generic service bridge.
+        return new PlatformServiceBridge();
+    }
+
+    public static native void nativeSetMetricsEnabled(boolean enabled);
+}