Always fully qualify the namespace to use in v8.h

Also, remove some unused methods.

BUG=none
R=dcarney@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/297223006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21487 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -5648,13 +5648,14 @@ class Internals {
     return reinterpret_cast<internal::Object**>(addr + index * kApiPointerSize);
   }
 
-  template <typename T> V8_INLINE static T ReadField(Object* ptr, int offset) {
+  template <typename T>
+  V8_INLINE static T ReadField(internal::Object* ptr, int offset) {
     uint8_t* addr = reinterpret_cast<uint8_t*>(ptr) + offset - kHeapObjectTag;
     return *reinterpret_cast<T*>(addr);
   }
 
   template <typename T>
-  V8_INLINE static T ReadEmbedderData(Context* context, int index) {
+  V8_INLINE static T ReadEmbedderData(v8::Context* context, int index) {
     typedef internal::Object O;
     typedef internal::Internals I;
     O* ctx = *reinterpret_cast<O**>(context);
@@ -5665,14 +5666,6 @@ class Internals {
         I::kFixedArrayHeaderSize + (internal::kApiPointerSize * index);
     return I::ReadField<T>(embedder_data, value_offset);
   }
-
-  V8_INLINE static bool CanCastToHeapObject(void* o) { return false; }
-  V8_INLINE static bool CanCastToHeapObject(Context* o) { return true; }
-  V8_INLINE static bool CanCastToHeapObject(String* o) { return true; }
-  V8_INLINE static bool CanCastToHeapObject(Object* o) { return true; }
-  V8_INLINE static bool CanCastToHeapObject(Message* o) { return true; }
-  V8_INLINE static bool CanCastToHeapObject(StackTrace* o) { return true; }
-  V8_INLINE static bool CanCastToHeapObject(StackFrame* o) { return true; }
 };
 
 }  // namespace internal