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/Symbol/ClangASTContext.cpp b/lldb/source/Symbol/ClangASTContext.cpp
index 8d51861..2ce92d0 100644
--- a/lldb/source/Symbol/ClangASTContext.cpp
+++ b/lldb/source/Symbol/ClangASTContext.cpp
@@ -73,7 +73,6 @@
 #include "lldb/Core/ArchSpec.h"
 #include "lldb/Utility/Flags.h"
 
-#include "lldb/Core/Log.h"
 #include "lldb/Core/Module.h"
 #include "lldb/Core/PluginManager.h"
 #include "lldb/Core/Scalar.h"
@@ -94,6 +93,7 @@
 #include "lldb/Target/Process.h"
 #include "lldb/Target/Target.h"
 #include "lldb/Utility/LLDBAssert.h"
+#include "lldb/Utility/Log.h"
 #include "lldb/Utility/RegularExpression.h"
 
 #include "Plugins/SymbolFile/DWARF/DWARFASTParserClang.h"