Replace Handle<> with Local in remaining gin/*

gin/array_buffer.h

Index: gin/array_buffer.h
diff --git a/gin/array_buffer.h b/gin/array_buffer.h
index fe3fae28153e37e4c80c2fc4b2457a45ad567623..4451540e65436c73653fcb0a57a9784644fee626 100644
--- a/gin/array_buffer.h
+++ b/gin/array_buffer.h
@@ -26,7 +26,7 @@ class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
 class GIN_EXPORT ArrayBuffer {
  public:
   ArrayBuffer();
-  ArrayBuffer(v8::Isolate* isolate, v8::Handle<v8::ArrayBuffer> buffer);
+  ArrayBuffer(v8::Isolate* isolate, v8::Local<v8::ArrayBuffer> buffer);
   ~ArrayBuffer();
   ArrayBuffer& operator=(const ArrayBuffer& other);
 
@@ -45,14 +45,14 @@ class GIN_EXPORT ArrayBuffer {
 
 template<>
 struct GIN_EXPORT Converter<ArrayBuffer> {
-  static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
+  static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
                      ArrayBuffer* out);
 };
 
 class GIN_EXPORT ArrayBufferView {
  public:
   ArrayBufferView();
-  ArrayBufferView(v8::Isolate* isolate, v8::Handle<v8::ArrayBufferView> view);
+  ArrayBufferView(v8::Isolate* isolate, v8::Local<v8::ArrayBufferView> view);
   ~ArrayBufferView();
   ArrayBufferView& operator=(const ArrayBufferView& other);
 
@@ -71,7 +71,7 @@ class GIN_EXPORT ArrayBufferView {
 
 template<>
 struct GIN_EXPORT Converter<ArrayBufferView> {
-  static bool FromV8(v8::Isolate* isolate, v8::Handle<v8::Value> val,
+  static bool FromV8(v8::Isolate* isolate, v8::Local<v8::Value> val,
                      ArrayBufferView* out);
 };