Remove legacy StartsWithASCII function.

content/browser/tracing/tracing_ui.cc

Index: content/browser/tracing/tracing_ui.cc
diff --git a/content/browser/tracing/tracing_ui.cc b/content/browser/tracing/tracing_ui.cc
index 1afff96cab38184742799ae70d4d4f469daca699..b83376d8eb7eb01ea1c3612bc4d4121d24b1d103 100644
--- a/content/browser/tracing/tracing_ui.cc
+++ b/content/browser/tracing/tracing_ui.cc
@@ -207,7 +207,8 @@ bool OnBeginJSONRequest(const std::string& path,
   }
 
   const char* beginRecordingPath = "json/begin_recording?";
-  if (base::StartsWithASCII(path, beginRecordingPath, true)) {
+  if (base::StartsWith(path, beginRecordingPath,
+                       base::CompareCase::SENSITIVE)) {
     std::string data = path.substr(strlen(beginRecordingPath));
     return BeginRecording(data, callback);
   }
@@ -253,7 +254,7 @@ bool OnBeginJSONRequest(const std::string& path,
 
 bool OnTracingRequest(const std::string& path,
                       const WebUIDataSource::GotDataCallback& callback) {
-  if (base::StartsWithASCII(path, "json/", true)) {
+  if (base::StartsWith(path, "json/", base::CompareCase::SENSITIVE)) {
     if (!OnBeginJSONRequest(path, callback)) {
       std::string error("##ERROR##");
       callback.Run(base::RefCountedString::TakeString(&error));