X87: Clear exceptions in Invoke instead of JSEntryStub.

  port cdae8654 (r38292)

  original commit message:
  A corresponding flag was added as well to help us find out what breaks when we
  do not clear pending exceptions on each JS entry.

BUG=

Review-Url: https://codereview.chromium.org/2212733002
Cr-Commit-Position: refs/heads/master@{#38320}

src/x87/code-stubs-x87.cc

@@ -1691,10 +1691,6 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   __ bind(&invoke);
   __ PushStackHandler();
 
-  // Clear any pending exceptions.
-  __ mov(edx, Immediate(isolate()->factory()->the_hole_value()));
-  __ mov(Operand::StaticVariable(pending_exception), edx);
-
   // Fake a receiver (NULL).
   __ push(Immediate(0));  // receiver