More native input dispatch work.

Removed old input dispatch code.
Refactored the policy callbacks.
Pushed a tiny bit of the power manager state down to native.
Fixed long press on MENU.
Made the virtual key detection and cancelation a bit more precise.

Change-Id: I5d8c1062f7ea0ab3b54c6fadb058c4d5f5a9e02e

services/java/com/android/server/PowerManagerService.java

@@ -247,6 +247,9 @@ class PowerManagerService extends IPowerManager.Stub
     private static final boolean mSpew = false;
     private static final boolean mDebugProximitySensor = (true || mSpew);
     private static final boolean mDebugLightSensor = (false || mSpew);
+    
+    private native void nativeInit();
+    private native void nativeSetPowerState(boolean screenOn, boolean screenBright);
 
     /*
     static PrintStream mLog;
@@ -481,6 +484,11 @@ class PowerManagerService extends IPowerManager.Stub
                 }
             }
         }
+        
+        nativeInit();
+        synchronized (mLocks) {
+            updateNativePowerStateLocked();
+        }
     }
 
     void initInThread() {
@@ -1557,8 +1565,16 @@ class PowerManagerService extends IPowerManager.Stub
                     }
                 }
             }
+            
+            updateNativePowerStateLocked();
         }
     }
+    
+    private void updateNativePowerStateLocked() {
+        nativeSetPowerState(
+                (mPowerState & SCREEN_ON_BIT) != 0,
+                (mPowerState & SCREEN_BRIGHT) == SCREEN_BRIGHT);
+    }
 
     private int screenOffFinishedAnimatingLocked(int reason) {
         // I don't think we need to check the current state here because all of these