API: Change AdjustAmountOfExternalAllocatedMemory calls to use int64_t instead of intptr_t

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 736f0b00d7ac833ca3409ebd703a90f8ef49a5bc..ef9eec38e20bfe1d75c9f96e885ea665be3a760c 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -6386,14 +6386,14 @@ void V8::SetFailedAccessCheckCallbackFunction(
 }
 
 
-intptr_t Isolate::AdjustAmountOfExternalAllocatedMemory(
-    intptr_t change_in_bytes) {
+int64_t Isolate::AdjustAmountOfExternalAllocatedMemory(
+    int64_t change_in_bytes) {
   i::Heap* heap = reinterpret_cast<i::Isolate*>(this)->heap();
   return heap->AdjustAmountOfExternalAllocatedMemory(change_in_bytes);
 }
 
 
-intptr_t V8::AdjustAmountOfExternalAllocatedMemory(intptr_t change_in_bytes) {
+int64_t V8::AdjustAmountOfExternalAllocatedMemory(int64_t change_in_bytes) {
   i::Isolate* isolate = i::Isolate::UncheckedCurrent();
   if (isolate == NULL || !isolate->IsInitialized()) {
     return 0;