Migrate components/data_reduction_proxy to Mojo interfaces.

components/data_reduction_proxy/content/browser/BUILD.gn

Index: components/data_reduction_proxy/content/browser/BUILD.gn
diff --git a/components/data_reduction_proxy/content/browser/BUILD.gn b/components/data_reduction_proxy/content/browser/BUILD.gn
index 15657e6d05fa593695f428497f1d9cacc6a2cc91..dcb039e2c28d5f9d41ce3fed2336f72d9b912513 100644
--- a/components/data_reduction_proxy/content/browser/BUILD.gn
+++ b/components/data_reduction_proxy/content/browser/BUILD.gn
@@ -8,8 +8,8 @@ source_set("browser") {
     "content_lofi_decider.h",
     "content_lofi_ui_service.cc",
     "content_lofi_ui_service.h",
-    "data_reduction_proxy_message_filter.cc",
-    "data_reduction_proxy_message_filter.h",
+    "data_reduction_proxy_host_impl.cc",
+    "data_reduction_proxy_host_impl.h",
   ]
 
   deps = [
@@ -19,7 +19,6 @@ source_set("browser") {
     "//components/data_reduction_proxy/core/common",
     "//content/public/browser",
     "//content/public/common",
-    "//ipc",
     "//net",
   ]
 }
@@ -29,7 +28,7 @@ source_set("unit_tests") {
   sources = [
     "content_lofi_decider_unittest.cc",
     "content_lofi_ui_service_unittest.cc",
-    "data_reduction_proxy_message_filter_unittest.cc",
+    "data_reduction_proxy_host_impl_unittest.cc",
   ]
 
   deps = [
@@ -40,6 +39,7 @@ source_set("unit_tests") {
     "//content/public/browser",
     "//content/public/common",
     "//content/test:test_support",
+    "//mojo/public/cpp/bindings",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",