Add the plumbing to enable DRP

android_webview/native/aw_contents_statics.cc

Index: android_webview/native/aw_contents_statics.cc
diff --git a/android_webview/native/aw_contents_statics.cc b/android_webview/native/aw_contents_statics.cc
index 2b38d798b0e32ca29b8b8a71f1d95bc9b6038488..b89195cbf38fd7c2ca13e7fbc7bf6e0ed6e084f0 100644
--- a/android_webview/native/aw_contents_statics.cc
+++ b/android_webview/native/aw_contents_statics.cc
@@ -4,8 +4,10 @@
 
 #include "android_webview/native/aw_contents_statics.h"
 
+#include "android_webview/browser/aw_browser_context.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/callback.h"
+#include "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
 #include "content/public/browser/browser_thread.h"
 #include "jni/AwContentsStatics_jni.h"
 #include "net/cert/cert_database.h"
@@ -13,6 +15,7 @@
 using base::android::AttachCurrentThread;
 using base::android::ScopedJavaGlobalRef;
 using content::BrowserThread;
+using data_reduction_proxy::DataReductionProxySettings;
 
 namespace android_webview {
 
@@ -43,6 +46,16 @@ void ClearClientCertPreferences(JNIEnv* env, jclass, jobject callback) {
       base::Bind(&ClientCertificatesCleared, base::Owned(j_callback)));
 }
 
+// static
+void SetDataReductionProxyEnabled(JNIEnv* env, jclass, jboolean enabled) {
+  AwBrowserContext* context = AwBrowserContext::GetDefault();
+  if (context == NULL) return;

[boliu, 2014/05/06 23:38:04]

return on new line (don't need brackets) here and below

c++ vs java styles lalala

+  DataReductionProxySettings* proxy_settings =
+      context->GetDataReductionProxySettings();
+  if (proxy_settings == NULL) return;
+  proxy_settings->SetDataReductionProxyEnabled(enabled);
+}
+
 bool RegisterAwContentsStatics(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }