refactor(TypeScript): Add noImplicitAny

We automatically insert explicit 'any's where needed. These need to be
addressed as in #9100.

Fixes #4924

modules/@angular/http/src/backends/xhr_backend.ts

@@ -107,7 +107,7 @@ export class XHRConnection implements Connection {
     });
   }
 
-  setDetectedContentType(req, _xhr) {
+  setDetectedContentType(req: any /** TODO #9100 */, _xhr: any /** TODO #9100 */) {
     // Skip if a custom Content-Type header is provided
     if (isPresent(req.headers) && isPresent(req.headers['Content-Type'])) {
       return;

modules/@angular/http/src/headers.ts

@@ -128,11 +128,11 @@ export class Headers {
   toJSON(): {[key: string]: any} {
     let serializableHeaders = {};
     this._headersMap.forEach((values: string[], name: string) => {
-      let list = [];
+      let list: any[] /** TODO #9100 */ = [];
 
-      iterateListLike(values, val => list = ListWrapper.concat(list, val.split(',')));
+      iterateListLike(values, (val: any /** TODO #9100 */) => list = ListWrapper.concat(list, val.split(',')));
 
-      serializableHeaders[name] = list;
+      (serializableHeaders as any /** TODO #9100 */)[name] = list;
     });
     return serializableHeaders;
   }

modules/@angular/http/src/static_request.ts

@@ -168,6 +168,6 @@ export class Request {
 
 const noop = function () {};
 const w = typeof window == 'object' ? window : noop;
-const FormData = w['FormData'] || noop;
-const Blob = w['Blob'] || noop;
-const ArrayBuffer = w['ArrayBuffer'] || noop;
+const FormData = (w as any /** TODO #9100 */)['FormData'] || noop;
+const Blob = (w as any /** TODO #9100 */)['Blob'] || noop;
+const ArrayBuffer = (w as any /** TODO #9100 */)['ArrayBuffer'] || noop;