src/api-impl: fix up code style, mainly for code imported from AOSP

used the following (plus manual edits):
`clang-format --style="{BasedOnStyle: LLVM, IndentWidth: 8, UseTab: Always, AllowShortIfStatementsOnASingleLine: false, IndentCaseLabels: true, ColumnLimit: 0}`

src/api-impl/android/os/SystemClock.java

@@ -16,7 +16,6 @@
 
 package android.os;
 
-
 /**
  * Core timekeeping facilities.
  *
@@ -89,24 +88,23 @@ package android.os;
  * </ul>
  */
 public final class SystemClock {
-    /**
-     * This class is uninstantiable.
-     */
-    private SystemClock() {
-        // This space intentionally left blank.
-    }
+	/**
+	 * This class is uninstantiable.
+	 */
+	private SystemClock() {
+		// This space intentionally left blank.
+	}
 
-    /**
-     * Waits a given number of milliseconds (of uptimeMillis) before returning.
-     * Similar to {@link java.lang.Thread#sleep(long)}, but does not throw
-     * {@link InterruptedException}; {@link Thread#interrupt()} events are
-     * deferred until the next interruptible operation.  Does not return until
-     * at least the specified number of milliseconds has elapsed.
-     *
-     * @param ms to sleep before returning, in milliseconds of uptime.
-     */
-    public static void sleep(long ms)
-    {
+	/**
+	 * Waits a given number of milliseconds (of uptimeMillis) before returning.
+	 * Similar to {@link java.lang.Thread#sleep(long)}, but does not throw
+	 * {@link InterruptedException}; {@link Thread#interrupt()} events are
+	 * deferred until the next interruptible operation.  Does not return until
+	 * at least the specified number of milliseconds has elapsed.
+	 *
+	 * @param ms to sleep before returning, in milliseconds of uptime.
+	 */
+	public static void sleep(long ms) {
 		System.out.println("!!! sleep(...) doesn't work, need to implement uptimeMillis");
 	/*
         long start = uptimeMillis();
@@ -129,60 +127,60 @@ public final class SystemClock {
             Thread.currentThread().interrupt();
         }
     */}
-    
-    /**
-     * Sets the current wall time, in milliseconds.  Requires the calling
-     * process to have appropriate permissions.
-     *
-     * @return if the clock was successfully set to the specified time.
-     */
-    native public static boolean setCurrentTimeMillis(long millis);
 
-    /**
-     * Returns milliseconds since boot, not counting time spent in deep sleep.
-     *
-     * @return milliseconds of non-sleep uptime since boot.
-     */
-    /*native */public static long uptimeMillis() {
+	/**
+	 * Sets the current wall time, in milliseconds.  Requires the calling
+	 * process to have appropriate permissions.
+	 *
+	 * @return if the clock was successfully set to the specified time.
+	 */
+	native public static boolean setCurrentTimeMillis(long millis);
+
+	/**
+	 * Returns milliseconds since boot, not counting time spent in deep sleep.
+	 *
+	 * @return milliseconds of non-sleep uptime since boot.
+	 */
+	/*native */ public static long uptimeMillis() {
 		return 654000; // FIXME
 	}
 
-    /**
-     * Returns milliseconds since boot, including time spent in sleep.
-     *
-     * @return elapsed milliseconds since boot.
-     */
-    native public static long elapsedRealtime();
+	/**
+	 * Returns milliseconds since boot, including time spent in sleep.
+	 *
+	 * @return elapsed milliseconds since boot.
+	 */
+	native public static long elapsedRealtime();
 
-    /**
-     * Returns nanoseconds since boot, including time spent in sleep.
-     *
-     * @return elapsed nanoseconds since boot.
-     */
-    public static native long elapsedRealtimeNanos();
+	/**
+	 * Returns nanoseconds since boot, including time spent in sleep.
+	 *
+	 * @return elapsed nanoseconds since boot.
+	 */
+	public static native long elapsedRealtimeNanos();
 
-    /**
-     * Returns milliseconds running in the current thread.
-     * 
-     * @return elapsed milliseconds in the thread
-     */
-    public static native long currentThreadTimeMillis();
+	/**
+	 * Returns milliseconds running in the current thread.
+	 *
+	 * @return elapsed milliseconds in the thread
+	 */
+	public static native long currentThreadTimeMillis();
 
-    /**
-     * Returns microseconds running in the current thread.
-     * 
-     * @return elapsed microseconds in the thread
-     * 
-     * @hide
-     */
-    public static native long currentThreadTimeMicro();
+	/**
+	 * Returns microseconds running in the current thread.
+	 *
+	 * @return elapsed microseconds in the thread
+	 *
+	 * @hide
+	 */
+	public static native long currentThreadTimeMicro();
 
-    /**
-     * Returns current wall time in  microseconds.
-     * 
-     * @return elapsed microseconds in wall time
-     * 
-     * @hide
-     */
-    public static native long currentTimeMicro();
+	/**
+	 * Returns current wall time in  microseconds.
+	 *
+	 * @return elapsed microseconds in wall time
+	 *
+	 * @hide
+	 */
+	public static native long currentTimeMicro();
 }