[HTML5] Libraries refactor for linting.

Initial work to make liniting easier.

This includes:
- Rename http_request.js to library_godot_http_request.js.
- Rename externs.js to engine.externs.js.
- New library_godot_runtime.js (GodotRuntime) wraps around emscripten
  functions.
- Refactor of XMLHttpRequest handler in engine/preloader.js.
- Few fixes to bugs spotted by early stage linting.

1 files changed, 0 insertions, 51 deletions

diff --git a/platform/javascript/engine/utils.js b/platform/javascript/engine/utils.js
deleted file mode 100644
index 8455739a25..0000000000
--- a/platform/javascript/engine/utils.js
+++ /dev/null
@@ -1,51 +0,0 @@
-var Utils = {
-	createLocateRewrite: function(execName) {
-		function rw(path) {
-			if (path.endsWith('.worker.js')) {
-				return execName + '.worker.js';
-			} else if (path.endsWith('.audio.worklet.js')) {
-				return execName + '.audio.worklet.js';
-			} else if (path.endsWith('.js')) {
-				return execName + '.js';
-			} else if (path.endsWith('.wasm')) {
-				return execName + '.wasm';
-			}
-		}
-		return rw;
-	},
-
-	createInstantiatePromise: function(wasmLoader) {
-		function instantiateWasm(imports, onSuccess) {
-			wasmLoader.then(function(xhr) {
-				WebAssembly.instantiate(xhr.response, imports).then(function(result) {
-					onSuccess(result['instance'], result['module']);
-				});
-			});
-			wasmLoader = null;
-			return {};
-		};
-
-		return instantiateWasm;
-	},
-
-	findCanvas: function() {
-		var nodes = document.getElementsByTagName('canvas');
-		if (nodes.length && nodes[0] instanceof HTMLCanvasElement) {
-			return nodes[0];
-		}
-		throw new Error("No canvas found");
-	},
-
-	isWebGLAvailable: function(majorVersion = 1) {
-		var testContext = false;
-		try {
-			var testCanvas = document.createElement('canvas');
-			if (majorVersion === 1) {
-				testContext = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
-			} else if (majorVersion === 2) {
-				testContext = testCanvas.getContext('webgl2') || testCanvas.getContext('experimental-webgl2');
-			}
-		} catch (e) {}
-		return !!testContext;
-	}
-};