Also time external callbacks from generated code.

src/ia32/macro-assembler-ia32.cc

Index: src/ia32/macro-assembler-ia32.cc
diff --git a/src/ia32/macro-assembler-ia32.cc b/src/ia32/macro-assembler-ia32.cc
index 41c8667f1c726224776f18f5d2678f453ce76189..14fb8ca85220f1adba75dd26fb86711466bb72ad 100644
--- a/src/ia32/macro-assembler-ia32.cc
+++ b/src/ia32/macro-assembler-ia32.cc
@@ -1920,9 +1920,25 @@ void MacroAssembler::CallApiFunctionAndReturn(Address function_address,
   mov(edi, Operand::StaticVariable(limit_address));
   add(Operand::StaticVariable(level_address), Immediate(1));
 
+  if (FLAG_log_timer_events) {
+    FrameScope frame(this, StackFrame::MANUAL);
+    PushSafepointRegisters();
+    PrepareCallCFunction(0, eax);
+    CallCFunction(ExternalReference::log_enter_external_function(isolate()), 0);
+    PopSafepointRegisters();
+  }
+
   // Call the api function.
   call(function_address, RelocInfo::RUNTIME_ENTRY);
 
+  if (FLAG_log_timer_events) {
+    FrameScope frame(this, StackFrame::MANUAL);
+    PushSafepointRegisters();
+    PrepareCallCFunction(0, eax);
+    CallCFunction(ExternalReference::log_leave_external_function(isolate()), 0);
+    PopSafepointRegisters();
+  }
+
   if (!kReturnHandlesDirectly) {
     // PrepareCallApiFunction saved pointer to the output slot into
     // callee-save register esi.