refactor(http): use shared code from public 'angular2/angular2' namespace

Closes #4648

modules/angular2/http.ts

@@ -4,7 +4,7 @@
  * The http module provides services to perform http requests. To get started, see the {@link Http}
  * class.
  */
-import {provide, Provider} from 'angular2/core';
+import {provide, Provider} from 'angular2/angular2';
 import {Http, Jsonp} from './src/http/http';
 import {XHRBackend, XHRConnection} from './src/http/backends/xhr_backend';
 import {JSONPBackend, JSONPBackend_, JSONPConnection} from './src/http/backends/jsonp_backend';
@@ -291,4 +291,4 @@ export const JSONP_PROVIDERS: any[] = [
 /**
  * @deprecated
  */
-export const JSON_BINDINGS = JSONP_PROVIDERS;
+export const JSON_BINDINGS = JSONP_PROVIDERS;

modules/angular2/src/http/backends/browser_jsonp.ts

@@ -1,4 +1,4 @@
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 import {global} from 'angular2/src/core/facade/lang';
 
 let _nextRequestId = 0;

modules/angular2/src/http/backends/browser_xhr.ts

@@ -1,4 +1,4 @@
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 
 // Make sure not to evaluate this in a non-browser environment!
 @Injectable()

modules/angular2/src/http/backends/jsonp_backend.ts

@@ -3,7 +3,7 @@ import {ReadyStates, RequestMethods} from '../enums';
 import {Request} from '../static_request';
 import {Response} from '../static_response';
 import {ResponseOptions, BaseResponseOptions} from '../base_response_options';
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 import {BrowserJsonp} from './browser_jsonp';
 import {EventEmitter, ObservableWrapper} from 'angular2/src/core/facade/async';
 import {makeTypeError} from 'angular2/src/core/facade/exceptions';

modules/angular2/src/http/backends/mock_backend.ts

@@ -1,4 +1,4 @@
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 import {Request} from '../static_request';
 import {Response} from '../static_response';
 import {ReadyStates} from '../enums';

modules/angular2/src/http/backends/xhr_backend.ts

@@ -3,7 +3,7 @@ import {ReadyStates, RequestMethods, ResponseTypes} from '../enums';
 import {Request} from '../static_request';
 import {Response} from '../static_response';
 import {ResponseOptions, BaseResponseOptions} from '../base_response_options';
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 import {BrowserXhr} from './browser_xhr';
 import {isPresent} from 'angular2/src/core/facade/lang';
 // todo(robwormald): temporary until https://github.com/angular/angular/issues/4390 decided

modules/angular2/src/http/base_request_options.ts

@@ -2,7 +2,7 @@ import {isPresent, isString} from 'angular2/src/core/facade/lang';
 import {Headers} from './headers';
 import {RequestMethods} from './enums';
 import {RequestOptionsArgs} from './interfaces';
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 import {URLSearchParams} from './url_search_params';
 import {normalizeMethodName} from './http_utils';
 

modules/angular2/src/http/base_response_options.ts

@@ -1,4 +1,4 @@
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/angular2';
 import {isPresent, isJsObject} from 'angular2/src/core/facade/lang';
 import {Headers} from './headers';
 import {ResponseTypes} from './enums';

modules/angular2/src/http/http.ts

@@ -1,6 +1,6 @@
 import {isString, isPresent, isBlank} from 'angular2/src/core/facade/lang';
 import {makeTypeError} from 'angular2/src/core/facade/exceptions';
-import {Injectable} from 'angular2/src/core/di/decorators';
+import {Injectable} from 'angular2/angular2';
 import {RequestOptionsArgs, Connection, ConnectionBackend} from './interfaces';
 import {Request} from './static_request';
 import {BaseRequestOptions, RequestOptions} from './base_request_options';