Make V8Binding helpers return LocalFrame/LocalDOMWindow as appropriate

third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp b/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
index 0ccf6f2bea17d3dae699317ce7d50db252d5a6a6..78703fc560fa5b976c097b0bfb8b2bd996614495 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp
@@ -717,15 +717,15 @@ DOMWindow* toDOMWindow(v8::Isolate* isolate, v8::Local<v8::Value> value) {
   return 0;
 }
 
-DOMWindow* toDOMWindow(v8::Local<v8::Context> context) {
+LocalDOMWindow* toDOMWindow(v8::Local<v8::Context> context) {
   if (context.IsEmpty())
     return 0;
-  return toDOMWindow(context->GetIsolate(), context->Global());
+  return toLocalDOMWindow(
+      toDOMWindow(context->GetIsolate(), context->Global()));
 }
 
 LocalDOMWindow* enteredDOMWindow(v8::Isolate* isolate) {
-  LocalDOMWindow* window =
-      toLocalDOMWindow(toDOMWindow(isolate->GetEnteredContext()));
+  LocalDOMWindow* window = toDOMWindow(isolate->GetEnteredContext());
   if (!window) {
     // We don't always have an entered DOM window, for example during microtask
     // callbacks from V8 (where the entered context may be the DOM-in-JS
@@ -741,7 +741,7 @@ LocalDOMWindow* enteredDOMWindow(v8::Isolate* isolate) {
 }
 
 LocalDOMWindow* currentDOMWindow(v8::Isolate* isolate) {
-  return toLocalDOMWindow(toDOMWindow(isolate->GetCurrentContext()));
+  return toDOMWindow(isolate->GetCurrentContext());
 }
 
 ExecutionContext* toExecutionContext(v8::Local<v8::Context> context) {
@@ -770,8 +770,8 @@ ExecutionContext* currentExecutionContext(v8::Isolate* isolate) {
   return toExecutionContext(isolate->GetCurrentContext());
 }
 
-Frame* toFrameIfNotDetached(v8::Local<v8::Context> context) {
-  DOMWindow* window = toDOMWindow(context);
+LocalFrame* toFrameIfNotDetached(v8::Local<v8::Context> context) {
+  LocalDOMWindow* window = toDOMWindow(context);
   if (window && window->isCurrentlyDisplayedInFrame())
     return window->frame();
   // We return 0 here because |context| is detached from the Frame. If we