refactor(pipes): use Injector instead of pipe factories for pipe instantiation

BREAKING CHANGE
    - Pipe factories have been removed.
    - PIpe names to pipe implementations are 1-to-1  instead of 1-to-*

 Before:
     class DateFormatter {
         transform(date, args){}
     }

     class DateFormatterFactory {
       supporst(obj) { return true; }
       create(cdRef) { return new DateFormatter(); }
     }
     new Pipes({date: [new DateFormatterFactory()]})

After
    class DateFormatter {
      transform(date, args){}
    }
    new Pipes({date: DateFormatter})

modules/angular2/src/test_lib/spies.dart

@@ -19,11 +19,6 @@ class SpyPipe extends SpyObject implements Pipe {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
-@proxy()
-class SpyPipeFactory extends SpyObject implements PipeFactory {
-  noSuchMethod(m) => super.noSuchMethod(m);
-}
-
 @proxy()
 class SpyDependencyProvider extends SpyObject implements DependencyProvider {
   noSuchMethod(m) => super.noSuchMethod(m);
@@ -39,3 +34,8 @@ class SpyIterableDifferFactory extends SpyObject
     implements IterableDifferFactory {
   noSuchMethod(m) => super.noSuchMethod(m);
 }
+
+@proxy
+class SpyInjector extends SpyObject implements Injector {
+  noSuchMethod(m) => super.noSuchMethod(m);
+}

modules/angular2/src/test_lib/spies.ts

@@ -22,12 +22,12 @@ export class SpyPipe extends SpyObject {
   constructor() { super(BasePipe); }
 }
 
-export class SpyPipeFactory extends SpyObject {}
-
 export class SpyDependencyProvider extends SpyObject {}
 
 export class SpyIterableDifferFactory extends SpyObject {}
 
+export class SpyInjector extends SpyObject {}
+
 export class SpyChangeDetectorRef extends SpyObject {
   constructor() { super(ChangeDetectorRef); }
 }

modules/angular2/src/test_lib/test_injector.ts

@@ -122,7 +122,7 @@ function _getAppBindings() {
     Compiler,
     CompilerCache,
     bind(ViewResolver).toClass(MockViewResolver),
-    bind(Pipes).toValue(defaultPipes),
+    defaultPipes,
     bind(IterableDiffers).toValue(defaultIterableDiffers),
     bind(KeyValueDiffers).toValue(defaultKeyValueDiffers),
     bind(ChangeDetection).toClass(DynamicChangeDetection),