Use no-op statistics collecting object for WebView

android_webview/browser/aw_browser_context.cc

 // Copyright (c) 2012 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.
 
 #include "android_webview/browser/aw_browser_context.h"
 
 #include "android_webview/browser/aw_form_database_service.h"
 #include "android_webview/browser/aw_pref_store.h"
 #include "android_webview/browser/aw_quota_manager_bridge.h"
 #include "android_webview/browser/aw_resource_context.h"
 #include "android_webview/browser/jni_dependency_factory.h"
 #include "android_webview/browser/net/aw_url_request_context_getter.h"
 #include "android_webview/browser/net/init_native_callback.h"
 #include "base/bind.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/pref_service_factory.h"
 #include "components/autofill/core/common/autofill_pref_names.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_params.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_prefs.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
+#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.h"
 #include "components/user_prefs/user_prefs.h"
 #include "components/visitedlink/browser/visitedlink_master.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/ssl_host_state_delegate.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "net/cookies/cookie_store.h"
 #include "net/proxy/proxy_service.h"
 
 using base::FilePath;
@@ skipping 54 matching lines @@
   // not created yet.
   data_reduction_proxy_enabled_ = enabled;
   AwBrowserContext* context = AwBrowserContext::GetDefault();
   // Can't enable Data reduction proxy if user pref service is not ready.
   if (context == NULL || context->user_pref_service_.get() == NULL)
     return;
   DataReductionProxySettings* proxy_settings =
       context->GetDataReductionProxySettings();
   if (proxy_settings == NULL)
     return;
+
+  context->CreateDataReductionProxyStatisticsIfNecessary();
+  proxy_settings->SetDataReductionProxyStatisticsPrefs(
+      context->data_reduction_proxy_statistics_.get());
   proxy_settings->SetDataReductionProxyEnabled(data_reduction_proxy_enabled_);
 }
 
 void AwBrowserContext::PreMainMessageLoopRun() {
   cookie_store_ = CreateCookieStore(this);
   data_reduction_proxy_settings_.reset(
       new DataReductionProxySettings(
           new data_reduction_proxy::DataReductionProxyParams(
               data_reduction_proxy::DataReductionProxyParams::kAllowed)));
   scoped_ptr<DataReductionProxyConfigService>
@@ skipping 180 matching lines @@
 }
 
 void AwBrowserContext::RebuildTable(
     const scoped_refptr<URLEnumerator>& enumerator) {
   // Android WebView rebuilds from WebChromeClient.getVisitedHistory. The client
   // can change in the lifetime of this WebView and may not yet be set here.
   // Therefore this initialization path is not used.
   enumerator->OnComplete(true);
 }
 
+void AwBrowserContext::CreateDataReductionProxyStatisticsIfNecessary() {
+  DCHECK(user_pref_service_.get());
+
+  if (!data_reduction_proxy_statistics_.get()) {
+    // We don't care about commit_delay for now. It is just a dummy value.
+    base::TimeDelta commit_delay = base::TimeDelta::FromMinutes(60);
+    data_reduction_proxy_statistics_ =
+        scoped_ptr<data_reduction_proxy::DataReductionProxyStatisticsPrefs>(
+            new data_reduction_proxy::DataReductionProxyStatisticsPrefs(
+                user_pref_service_.get(),
+                base::MessageLoopProxy::current(),
+                commit_delay));
+  }
+}
+
 }  // namespace android_webview