WebView: Add channel info for UMA

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java

 // Copyright 2014 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 com.android.webview.chromium;
 
 import android.Manifest;
 import android.app.ActivityManager;
 import android.content.ComponentCallbacks2;
 import android.content.Context;
@@ skipping 399 matching lines @@
         final PackageInfo webViewPackageInfo = WebViewFactory.getLoadedPackageInfo();
         final String webViewPackageName = webViewPackageInfo.packageName;
         final Context context = ContextUtils.getApplicationContext();
         setUpResources(webViewPackageInfo, context);
         initPlatSupportLibrary();
         doNetworkInitializations(context);
         final boolean isExternalService = true;
         // The WebView package name is used to locate the separate Service to which we copy crash
         // minidumps. This package name must be set before a render process has a chance to crash -
         // otherwise we might try to copy a minidump without knowing what process to copy it to.
+        // It's also used to determine channel for UMA, so it must be set before initializing UMA.
         AwBrowserProcess.setWebViewPackageName(webViewPackageName);
         AwBrowserProcess.configureChildProcessLauncher(webViewPackageName, isExternalService);
         AwBrowserProcess.start();
         AwBrowserProcess.handleMinidumpsAndSetMetricsConsent(
                 webViewPackageName, true /* updateMetricsConsent */);
 
         if (CommandLineUtil.isBuildDebuggable()) {
             setWebContentsDebuggingEnabled(true);
         }
 
@@ skipping 272 matching lines @@
     WebViewDelegate getWebViewDelegate() {
         return mWebViewDelegate;
     }
 
     // The method to support unreleased Android.
     WebViewContentsClientAdapter createWebViewContentsClientAdapter(WebView webView,
             Context context) {
         return new WebViewContentsClientAdapter(webView, context, mWebViewDelegate);
     }
 }