Make MetricsService upload logs through an interface.

chrome/browser/metrics/compression_utils_unittest.cc

Index: chrome/browser/metrics/compression_utils_unittest.cc
===================================================================
--- chrome/browser/metrics/compression_utils_unittest.cc	(revision 272759)
+++ chrome/browser/metrics/compression_utils_unittest.cc	(working copy)
@@ -8,8 +8,8 @@
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
-#include "chrome/browser/metrics/compression_utils.h"
 #include "chrome/common/chrome_paths.h"
+#include "components/metrics/net/compression_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ -38,7 +38,7 @@
 TEST(CompressionUtilsTest, GzipCompression) {
   std::string data(reinterpret_cast<const char*>(kData), arraysize(kData));
   std::string compressed_data;
-  EXPECT_TRUE(chrome::GzipCompress(data, &compressed_data));
+  EXPECT_TRUE(metrics::GzipCompress(data, &compressed_data));
   std::string golden_compressed_data(
       reinterpret_cast<const char*>(kCompressedData),
       arraysize(kCompressedData));