chore: adjust formatting to new clang-format.

- fixes wrapping for object literal keys called `template`.
- spacing in destructuring expressions.
- changes to keep trailing return types of functions closer to their
  function declaration.
- better formatting of string literals.

Closes #4828

modules/angular2/src/router/lifecycle_annotations.ts

@@ -42,6 +42,6 @@ export {
  *
  * {@example router/ts/can_activate/can_activate_example.ts region='canActivate' }
  */
-export var CanActivate:
-    (hook: (next: ComponentInstruction, prev: ComponentInstruction) => Promise<boolean>| boolean) =>
-        ClassDecorator = makeDecorator(CanActivateAnnotation);
+export var CanActivate: (hook: (next: ComponentInstruction, prev: ComponentInstruction) =>
+                             Promise<boolean>| boolean) => ClassDecorator =
+    makeDecorator(CanActivateAnnotation);

modules/angular2/src/router/route_config_impl.ts

@@ -41,8 +41,8 @@ export class Route implements RouteDefinition {
   // added next two properties to work around https://github.com/Microsoft/TypeScript/issues/4107
   loader: Function;
   redirectTo: string;
-  constructor({path, component, as, data}:
-                  {path: string, component: Type, as?: string, data?: {[key: string]: any}}) {
+  constructor({path, component, as,
+               data}: {path: string, component: Type, as?: string, data?: {[key: string]: any}}) {
     this.path = path;
     this.component = component;
     this.as = as;
@@ -115,8 +115,8 @@ export class AsyncRoute implements RouteDefinition {
   path: string;
   loader: Function;
   as: string;
-  constructor({path, loader, as, data}:
-                  {path: string, loader: Function, as?: string, data?: {[key: string]: any}}) {
+  constructor({path, loader, as,
+               data}: {path: string, loader: Function, as?: string, data?: {[key: string]: any}}) {
     this.path = path;
     this.loader = loader;
     this.as = as;

modules/angular2/src/router/router.ts

@@ -544,8 +544,8 @@ function splitAndFlattenLinkParams(linkParams: any[]): any[] {
   }, []);
 }
 
-function canActivateOne(nextInstruction: Instruction, prevInstruction: Instruction):
-    Promise<boolean> {
+function canActivateOne(nextInstruction: Instruction,
+                        prevInstruction: Instruction): Promise<boolean> {
   var next = _resolveToTrue;
   if (isPresent(nextInstruction.child)) {
     next = canActivateOne(nextInstruction.child,