Remove dead DocumentState metrics tracking code

third_party/WebKit/Source/web/tests/WebFrameTest.cpp

Index: third_party/WebKit/Source/web/tests/WebFrameTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/WebFrameTest.cpp b/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
index a7f8e65fea310bcb907693b82ea68472ce516063..02ebf66f9be7d686402693eed4c19d1f8e956799 100644
--- a/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
+++ b/third_party/WebKit/Source/web/tests/WebFrameTest.cpp
@@ -7169,7 +7169,7 @@ class TestHistoryWebFrameClient : public FrameTestHelpers::TestWebFrameClient {
     m_frame = nullptr;
   }
 
-  void didStartProvisionalLoad(WebLocalFrame* frame, double) {
+  void didStartProvisionalLoad(WebLocalFrame* frame) {
     WebDataSource* ds = frame->provisionalDataSource();
     m_replacesCurrentHistoryItem = ds->replacesCurrentHistoryItem();
     m_frame = frame;
@@ -9749,7 +9749,7 @@ class CallbackOrderingWebFrameClient
     EXPECT_EQ(0, m_callbackCount++);
     FrameTestHelpers::TestWebFrameClient::didStartLoading(toDifferentDocument);
   }
-  void didStartProvisionalLoad(WebLocalFrame*, double) override {
+  void didStartProvisionalLoad(WebLocalFrame*) override {
     EXPECT_EQ(1, m_callbackCount++);
   }
   void didCommitProvisionalLoad(WebLocalFrame*,