Remove data reduction proxy code.

android_webview/native/aw_contents.cc

Index: android_webview/native/aw_contents.cc
diff --git a/android_webview/native/aw_contents.cc b/android_webview/native/aw_contents.cc
index fb43e96316e4c938901c71a3d0d5ecdb4e18a31e..92673a2f9ebef8c6528fdcfaeacfc1e6b8a74710 100644
--- a/android_webview/native/aw_contents.cc
+++ b/android_webview/native/aw_contents.cc
@@ -56,7 +56,6 @@
 #include "components/autofill/content/browser/content_autofill_driver_factory.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
-#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
 #include "components/navigation_interception/intercept_navigation_delegate.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/android/synchronous_compositor.h"
@@ -94,7 +93,6 @@ using base::android::ConvertUTF8ToJavaString;
 using base::android::JavaRef;
 using base::android::ScopedJavaGlobalRef;
 using base::android::ScopedJavaLocalRef;
-using data_reduction_proxy::DataReductionProxySettings;
 using navigation_interception::InterceptNavigationDelegate;
 using content::BrowserThread;
 using content::ContentViewCore;