[cleanup] Fix use of deprecated BooleanValue in blink bindings

Also rebaselines the tests to match.

Bug: v8:7279, v8:8238
Change-Id: I4ba0aa32c5048a4a7e7a86ebf7481f048c13c95c
Reviewed-on: https://chromium-review.googlesource.com/c/1349225Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610619}

third_party/blink/renderer/bindings/templates/union_container.cc.tmpl

@@ -192,7 +192,7 @@ void {{v8_class}}::ToImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8Value, {{
   {# 16. Boolean (fallback) #}
   {% elif boolean_type %}
   {
-    impl.SetBoolean(v8Value->BooleanValue(isolate->GetCurrentContext()).ToChecked());
+    impl.SetBoolean(v8Value->BooleanValue(isolate));
     return;
   }
 

third_party/blink/renderer/bindings/tests/results/core/boolean_or_element_sequence.cc

@@ -89,7 +89,7 @@ void V8BooleanOrElementSequence::ToImpl(v8::Isolate* isolate, v8::Local<v8::Valu
   }
 
   {
-    impl.SetBoolean(v8Value->BooleanValue(isolate->GetCurrentContext()).ToChecked());
+    impl.SetBoolean(v8Value->BooleanValue(isolate));
     return;
   }
 }

third_party/blink/renderer/bindings/tests/results/core/boolean_or_test_callback_interface.cc

@@ -81,7 +81,7 @@ void V8BooleanOrTestCallbackInterface::ToImpl(v8::Isolate* isolate, v8::Local<v8
   }
 
   {
-    impl.SetBoolean(v8Value->BooleanValue(isolate->GetCurrentContext()).ToChecked());
+    impl.SetBoolean(v8Value->BooleanValue(isolate));
     return;
   }
 }