[WIP] support arm_neon_optional flag in blink.

Source/platform/Logging.cpp

Index: Source/platform/Logging.cpp
diff --git a/Source/platform/Logging.cpp b/Source/platform/Logging.cpp
index f10e5a624372055473c6d189697ba7fc22dde7bc..6227fd0d241177fcc6d3c634106e4690a0890751 100644
--- a/Source/platform/Logging.cpp
+++ b/Source/platform/Logging.cpp
@@ -69,6 +69,7 @@ WTFLogChannel LogGamepad =            { WTFLogChannelOff };
 
 WTFLogChannel LogScriptedAnimationController = { WTFLogChannelOff };
 WTFLogChannel LogTimers =                      { WTFLogChannelOff };
+WTFLogChannel LogCPU =                         { WTFLogChannelOff };
 
 WTFLogChannel* getChannelFromName(const String& channelName)
 {
@@ -156,6 +157,9 @@ WTFLogChannel* getChannelFromName(const String& channelName)
     if (equalIgnoringCase(channelName, String("Timers")))
         return &LogTimers;
 
+    if (equalIgnoringCase(channelName, String("CPU")))
+        return &LogCPU;
+
     return 0;
 }