[CTU] Add missing statistics

[xazax.hun]

LGTM!

cfe/trunk/lib/CrossTU/CrossTranslationUnit.cpp

 #define DEBUG_TYPE "CrossTranslationUnit"
 STATISTIC(NumGetCTUCalled, "The # of getCTUDefinition function called");
 STATISTIC(
     NumNotInOtherTU,
     "The # of getCTUDefinition called but the function is not in any other TU");
 STATISTIC(NumGetCTUSuccess,
           "The # of getCTUDefinition successfully returned the "
           "requested function's body");
+STATISTIC(NumUnsupportedNodeFound, "The # of imports when the ASTImporter "
+                                   "encountered an unsupported AST Node");
+STATISTIC(NumNameConflicts, "The # of imports when the ASTImporter "
+                            "encountered an ODR error");
 STATISTIC(NumTripleMismatch, "The # of triple mismatches");
 STATISTIC(NumLangMismatch, "The # of language mismatches");
 STATISTIC(NumLangDialectMismatch, "The # of language dialect mismatches");
 
 // Same as Triple's equality operator, but we check a field only if that is
 // known in both instances.
 bool hasEqualKnownFields(const llvm::Triple &Lhs, const llvm::Triple &Rhs) {
   using llvm::Triple;
CrossTranslationUnitContext::importDefinitionImpl(const T *D) {
 
   ASTImporter &Importer = getOrCreateASTImporter(D->getASTContext());
   auto ToDeclOrError = Importer.Import(D);
   if (!ToDeclOrError) {
     handleAllErrors(ToDeclOrError.takeError(),
                     [&](const ImportError &IE) {
                       switch (IE.Error) {
                       case ImportError::NameConflict:
-                        // FIXME: Add statistic.
+                        ++NumNameConflicts;
                          break;
                       case ImportError::UnsupportedConstruct:
-                        // FIXME: Add statistic.
+                        ++NumUnsupportedNodeFound;
                         break;
                       case ImportError::Unknown:
                         llvm_unreachable("Unknown import error happened.");
                         break;
                       }
                     });
     return llvm::make_error<IndexError>(index_error_code::failed_import);
   }