Add WARN_UNUSED_RESULT to base::Time methods that return bool.

components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_unittest.cc

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_unittest.cc
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_unittest.cc b/components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_unittest.cc
index 35ec52fb31ec81fde244767f660da2db94e86f06..6e2acb62bede2735801fe3377ff0e422d9c07147 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_unittest.cc
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_compression_stats_unittest.cc
@@ -11,6 +11,7 @@
 #include <utility>
 
 #include "base/command_line.h"
+#include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
@@ -114,7 +115,7 @@ const char kLastUpdateTime[] = "Wed, 18 Sep 2013 03:45:26";
 class DataReductionProxyCompressionStatsTest : public testing::Test {
  protected:
   DataReductionProxyCompressionStatsTest() {
-    base::Time::FromString(kLastUpdateTime, &now_);
+    ignore_result(base::Time::FromString(kLastUpdateTime, &now_));

[Nico, 2017/01/03 19:00:38]

this can probably be EXPECT_TRUE too?

[digit1, 2017/01/05 10:26:28]

Good point, I've changed that too. Thanks :)

   }
 
   void SetUp() override {