Remove a bunch of winapi 0.2 crates

components/allocator/Cargo.toml

@@ -13,4 +13,4 @@ path = "lib.rs"
 jemalloc-sys = { version = "0.1.4" }
 
 [target.'cfg(windows)'.dependencies]
-kernel32-sys = { version = "0.2.1" }
+winapi = { version = "0.3", features = ["heapapi"] }

components/allocator/lib.rs

@@ -98,9 +98,9 @@ mod platform {
 
 #[cfg(windows)]
 mod platform {
-    use kernel32::{GetProcessHeap, HeapSize, HeapValidate};
     pub use std::alloc::System as Allocator;
     use std::os::raw::c_void;
+    use winapi::um::heapapi::{GetProcessHeap, HeapSize, HeapValidate};
 
     /// Get the size of a heap block.
     pub unsafe extern "C" fn usable_size(mut ptr: *const c_void) -> usize {

ports/servo/Cargo.toml

@@ -60,9 +60,7 @@ osmesa-sys = "0.1.2"
 x11 = "2.0.0"
 
 [target.'cfg(target_os = "windows")'.dependencies]
-winapi = "0.2"
-user32-sys = "0.2"
-gdi32-sys = "0.2"
+winapi = { version = "0.3", features = ["wingdi", "winuser"] }
 
 [target.'cfg(any(target_os = "macos", all(target_arch = "x86_64", target_os = "linux")))'.dependencies]
 osmesa-src = {git = "https://github.com/servo/osmesa-src"}