Deletes the now-unused addTrace methods that don't accept user-supplied timestamps.

content/child/blink_platform_impl.h

Index: content/child/blink_platform_impl.h
diff --git a/content/child/blink_platform_impl.h b/content/child/blink_platform_impl.h
index 25e6826954d57b5c08e642b67985ca8854ee70c7..bffc6b9c19ab79a1feabd510221b0ff35b394a65 100644
--- a/content/child/blink_platform_impl.h
+++ b/content/child/blink_platform_impl.h
@@ -122,29 +122,6 @@ class CONTENT_EXPORT BlinkPlatformImpl
       const unsigned long long* arg_values,
       const blink::WebConvertableToTraceFormat* convertable_values,
       unsigned char flags);
-  // TODO(charliea): Remove the addTraceEvent methods without timestamps
-  // once Blink uses the new signature with timestamps
-  virtual TraceEventHandle addTraceEvent(
-      char phase,
-      const unsigned char* category_group_enabled,
-      const char* name,
-      unsigned long long id,
-      int num_args,
-      const char** arg_names,
-      const unsigned char* arg_types,
-      const unsigned long long* arg_values,
-      unsigned char flags);
-  virtual TraceEventHandle addTraceEvent(
-      char phase,
-      const unsigned char* category_group_enabled,
-      const char* name,
-      unsigned long long id,
-      int num_args,
-      const char** arg_names,
-      const unsigned char* arg_types,
-      const unsigned long long* arg_values,
-      const blink::WebConvertableToTraceFormat* convertable_values,
-      unsigned char flags);
   virtual void updateTraceEventDuration(
       const unsigned char* category_group_enabled,
       const char* name,