Move Log from Core -> Utility.

All references to Host and Core have been removed, so this
class can now safely be lowered into Utility.

Differential Revision: https://reviews.llvm.org/D30559

llvm-svn: 296909
diff --git a/lldb/source/Host/common/File.cpp b/lldb/source/Host/common/File.cpp
index 948c3f8..cb59b40 100644
--- a/lldb/source/Host/common/File.cpp
+++ b/lldb/source/Host/common/File.cpp
@@ -26,11 +26,11 @@
 #include "llvm/Support/Process.h" // for llvm::sys::Process::FileDescriptorHasColors()
 
 #include "lldb/Core/DataBufferHeap.h"
-#include "lldb/Core/Log.h"
 #include "lldb/Host/Config.h"
 #include "lldb/Host/FileSpec.h"
 #include "lldb/Host/FileSystem.h"
 #include "lldb/Utility/Error.h"
+#include "lldb/Utility/Log.h"
 
 using namespace lldb;
 using namespace lldb_private;