Revert of Preparation CL for WebRTC performance test using promise-based getStats

chrome/browser/media/webrtc/webrtc_browsertest_base.cc

Index: chrome/browser/media/webrtc/webrtc_browsertest_base.cc
diff --git a/chrome/browser/media/webrtc/webrtc_browsertest_base.cc b/chrome/browser/media/webrtc/webrtc_browsertest_base.cc
index 816618be0d2fb8f5744b0830f01e3c7c44bc95e8..ec41b87a5229ac0072d721e8985317ff4111099b 100644
--- a/chrome/browser/media/webrtc/webrtc_browsertest_base.cc
+++ b/chrome/browser/media/webrtc/webrtc_browsertest_base.cc
@@ -11,7 +11,6 @@
 #include "base/macros.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
-#include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/media/webrtc/webrtc_browsertest_common.h"
 #include "chrome/browser/permissions/permission_request_manager.h"
@@ -495,21 +494,6 @@
   return JsonArrayToVectorOfStrings(result.substr(3));
 }
 
-scoped_refptr<content::TestStatsReportDictionary>
-WebRtcTestBase::GetStatsReportDictionary(content::WebContents* tab) const {
-  std::string result = ExecuteJavascript("getStatsReportDictionary()", tab);
-  EXPECT_TRUE(base::StartsWith(result, "ok-", base::CompareCase::SENSITIVE));
-  std::unique_ptr<base::Value> parsed_json = base::JSONReader::Read(
-      result.substr(3));
-  base::DictionaryValue* dictionary;
-  CHECK(parsed_json);
-  CHECK(parsed_json->GetAsDictionary(&dictionary));
-  ignore_result(parsed_json.release());
-  return scoped_refptr<content::TestStatsReportDictionary>(
-      new content::TestStatsReportDictionary(
-          std::unique_ptr<base::DictionaryValue>(dictionary)));
-}
-
 std::vector<std::string> WebRtcTestBase::GetWhitelistedStatsTypes(
     content::WebContents* tab) const {
   return JsonArrayToVectorOfStrings(