[interpreter] Correctly thread through catch prediction.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index 022f41efa54ca550a3ffc6bd0c1d8c4e3e6d5294..67d81c605a163165873d2f3b6fcb77de5592dc89 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -301,7 +301,12 @@ class BytecodeGenerator::ControlScopeForTryCatch final
  public:
   ControlScopeForTryCatch(BytecodeGenerator* generator,
                           TryCatchBuilder* try_catch_builder)
-      : ControlScope(generator) {}
+      : ControlScope(generator) {
+    generator->try_catch_nesting_level_++;
+  }
+  virtual ~ControlScopeForTryCatch() {
+    generator()->try_catch_nesting_level_--;
+  }
 
  protected:
   bool Execute(Command command, Statement* statement) override {
@@ -328,7 +333,12 @@ class BytecodeGenerator::ControlScopeForTryFinally final
                             DeferredCommands* commands)
       : ControlScope(generator),
         try_finally_builder_(try_finally_builder),
-        commands_(commands) {}
+        commands_(commands) {
+    generator->try_finally_nesting_level_++;
+  }
+  virtual ~ControlScopeForTryFinally() {
+    generator()->try_finally_nesting_level_--;
+  }
 
  protected:
   bool Execute(Command command, Statement* statement) override {
@@ -543,7 +553,9 @@ BytecodeGenerator::BytecodeGenerator(Isolate* isolate, Zone* zone)
       execution_control_(nullptr),
       execution_context_(nullptr),
       execution_result_(nullptr),
-      register_allocator_(nullptr) {
+      register_allocator_(nullptr),
+      try_catch_nesting_level_(0),
+      try_finally_nesting_level_(0) {
   InitializeAstVisitor(isolate);
 }
 
@@ -1150,7 +1162,7 @@ void BytecodeGenerator::VisitTryCatchStatement(TryCatchStatement* stmt) {
 
 
 void BytecodeGenerator::VisitTryFinallyStatement(TryFinallyStatement* stmt) {
-  TryFinallyBuilder try_control_builder(builder());
+  TryFinallyBuilder try_control_builder(builder(), IsInsideTryCatch());
   Register no_reg;
 
   // We keep a record of all paths that enter the finally-block to be able to