Make LLVMContext and LLVMContextImpl classes instead of structs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78690 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-db/CLIDebugger.h b/tools/llvm-db/CLIDebugger.h
index 349c5e6..0595b3d 100644
--- a/tools/llvm-db/CLIDebugger.h
+++ b/tools/llvm-db/CLIDebugger.h
@@ -24,7 +24,7 @@
   struct SourceLanguage;
   class ProgramInfo;
   class RuntimeInfo;
-  struct LLVMContext;
+  class LLVMContext;
 
   /// CLIDebugger - This class implements the command line interface for the
   /// LLVM debugger.