Activate data reduction proxy after profile initialization is complete.

android_webview/browser/aw_browser_context.cc

Index: android_webview/browser/aw_browser_context.cc
diff --git a/android_webview/browser/aw_browser_context.cc b/android_webview/browser/aw_browser_context.cc
index f1f43d10414a0d29922958ee87ab6f07908a8971..79d7b17c999ed7fecf6dbd24357dc99569600119 100644
--- a/android_webview/browser/aw_browser_context.cc
+++ b/android_webview/browser/aw_browser_context.cc
@@ -216,6 +216,7 @@ void AwBrowserContext::CreateUserPrefServiceIfNecessary() {
     data_reduction_proxy_settings_->InitDataReductionProxySettings(
         user_pref_service_.get(),
         GetRequestContext());
+    data_reduction_proxy_settings_->MaybeActivateDataReductionProxy(true);
 
     SetDataReductionProxyEnabled(data_reduction_proxy_enabled_);
   }