perf: Send a boost hint when a key on the navbar is pressed

 * A lot of stuff happens, especially when invoking recents.
 * Get ahead of the storm by sending a boost hint before
   kicking off the animations.

Change-Id: I0cecd0c58f8bc8479ea44f63af796500d7b9d7d2

Author: hyperb1iss

packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java

@@ -26,6 +26,7 @@
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
+import android.os.PowerManager;
 import android.os.SystemClock;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -71,6 +72,7 @@ public class KeyButtonView extends ImageView {
     Animator mAnimateToQuiescent = new ObjectAnimator();
 
     AwesomeButtonInfo mActions;
+    private PowerManager mPm;
 
     boolean mHasSingleAction = true, mHasDoubleAction, mHasLongAction;
 
@@ -110,6 +112,7 @@ public KeyButtonView(Context context, AttributeSet attrs, int defStyle) {
         mGlowBgId = a.getResourceId(R.styleable.KeyButtonView_glowBackground, 0);
         setClickable(true);
         mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
+        mPm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
         mSinglePressTimeout = 200;
         mDoubleTapTimeout = 200;
         mLongPressTimeout = ViewConfiguration.getLongPressTimeout();
@@ -248,6 +251,10 @@ public void setGlowScale(float x) {
     public void setPressed(boolean pressed) {
         if (mGlowBG != null) {
             if (pressed != isPressed()) {
+
+                // A lot of stuff is about to happen. Lets get ready.
+                mPm.cpuBoost(750000);
+
                 if (mPressedAnim != null && mPressedAnim.isRunning()) {
                     mPressedAnim.cancel();
                 }