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/core/change_detection/constants.ts

@@ -51,8 +51,8 @@ export var CHANGE_DETECTION_STRATEGY_VALUES = [
   ChangeDetectionStrategy.OnPushObserve
 ];
 
-export function isDefaultChangeDetectionStrategy(changeDetectionStrategy: ChangeDetectionStrategy):
-    boolean {
+export function isDefaultChangeDetectionStrategy(
+    changeDetectionStrategy: ChangeDetectionStrategy): boolean {
   return isBlank(changeDetectionStrategy) ||
          changeDetectionStrategy === ChangeDetectionStrategy.Default;
 }