Revert of Remove platform/NotImplemented.*.

third_party/WebKit/Source/wtf/Assertions.cpp

Index: third_party/WebKit/Source/wtf/Assertions.cpp
diff --git a/third_party/WebKit/Source/wtf/Assertions.cpp b/third_party/WebKit/Source/wtf/Assertions.cpp
index d67ab5a56eeaf75b6d2c07e217bc2b2d21442a37..fe9afbec91e1dc479a52fae812b2c2a1f1e6e411 100644
--- a/third_party/WebKit/Source/wtf/Assertions.cpp
+++ b/third_party/WebKit/Source/wtf/Assertions.cpp
@@ -260,6 +260,19 @@
     va_end(args);
 }
 
+void WTFLogVerbose(const char* file, int line, const char* function, WTFLogChannel* channel, const char* format, ...)
+{
+    if (channel->state != WTFLogChannelOn)
+        return;
+
+    va_list args;
+    va_start(args, format);
+    vprintf_stderr_with_trailing_newline(format, args);
+    va_end(args);
+
+    printCallSite(file, line, function);
+}
+
 void WTFLogAlways(const char* format, ...)
 {
     va_list args;