Record UMA on number of days since data reduction proxy is enabled.

chrome/browser/net/spdyproxy/data_reduction_proxy_settings_unittest_android.cc

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_settings_unittest_android.cc
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_unittest_android.cc b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_unittest_android.cc
index 65a9145c93213c077cc030ebffbac8de1dc86c79..3495ebe42a296b012ea8d0fd0938ad85b0e52a38 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_unittest_android.cc
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_unittest_android.cc
@@ -31,6 +31,10 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
+namespace base {
+class Clock;
+}
+
 using testing::_;
 using testing::AnyNumber;
 using testing::Return;
@@ -57,6 +61,7 @@ class TestDataReductionProxySettingsAndroid
 
 template <class C>
 void data_reduction_proxy::DataReductionProxySettingsTestBase::ResetSettings(
+    std::unique_ptr<base::Clock> clock,
     bool allowed,
     bool fallback_allowed,
     bool promo_allowed,
@@ -88,10 +93,11 @@ void data_reduction_proxy::DataReductionProxySettingsTestBase::ResetSettings(
 
 template void
 data_reduction_proxy::DataReductionProxySettingsTestBase::ResetSettings<
-    DataReductionProxyChromeSettings>(bool allowed,
-                                       bool fallback_allowed,
-                                       bool promo_allowed,
-                                       bool holdback);
+    DataReductionProxyChromeSettings>(std::unique_ptr<base::Clock> clock,
+                                      bool allowed,
+                                      bool fallback_allowed,
+                                      bool promo_allowed,
+                                      bool holdback);
 
 class DataReductionProxySettingsAndroidTest
     : public data_reduction_proxy::ConcreteDataReductionProxySettingsTest<