Address NewApi Android lint warnings in src/media.

media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java

Index: media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java
diff --git a/media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java b/media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java
index 4a6f4ad30eaaf1ac8c45b09fbe4b0bfd7dc75041..9f5a49d76af89e4fb62610fe85a576d2eaa1cdd2 100644
--- a/media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java
+++ b/media/base/android/java/src/org/chromium/media/AudioManagerAndroid.java
@@ -4,6 +4,7 @@
 
 package org.chromium.media;
 
+import android.annotation.TargetApi;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothManager;
 import android.content.BroadcastReceiver;
@@ -70,18 +71,6 @@ class AudioManagerAndroid {
         }
     }
 
-    private static boolean runningOnJellyBeanOrHigher() {
-        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
-    }
-
-    private static boolean runningOnJellyBeanMR1OrHigher() {
-        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
-    }
-
-    private static boolean runningOnJellyBeanMR2OrHigher() {
-        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
-    }
-
     /** Simple container for device information. */
     private static class AudioDeviceName {
         private final int mId;
@@ -455,9 +444,10 @@ class AudioManagerAndroid {
         return array;
     }
 
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
     @CalledByNative
     private int getNativeOutputSampleRate() {
-        if (runningOnJellyBeanMR1OrHigher()) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
             String sampleRateString = mAudioManager.getProperty(
                     AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE);
             return sampleRateString == null
@@ -513,18 +503,23 @@ class AudioManagerAndroid {
                 PackageManager.FEATURE_AUDIO_LOW_LATENCY);
     }
 
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
     @CalledByNative
     private int getAudioLowLatencyOutputFrameSize() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return DEFAULT_FRAME_PER_BUFFER;
+        }
         String framesPerBuffer =
                 mAudioManager.getProperty(AudioManager.PROPERTY_OUTPUT_FRAMES_PER_BUFFER);
         return framesPerBuffer == null
                 ? DEFAULT_FRAME_PER_BUFFER : Integer.parseInt(framesPerBuffer);
     }
 
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
     @CalledByNative
     private static boolean shouldUseAcousticEchoCanceler() {
         // AcousticEchoCanceler was added in API level 16 (Jelly Bean).
-        if (!runningOnJellyBeanOrHigher()) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
             return false;
         }
 
@@ -642,6 +637,7 @@ class AudioManagerAndroid {
      * android.bluetooth.BluetoothAdapter.getProfileConnectionState() requires
      * the BLUETOOTH permission.
      */
+    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
     private boolean hasBluetoothHeadset() {
         if (!mHasBluetoothPermission) {
             Log.w(TAG, "hasBluetoothHeadset() requires BLUETOOTH permission");
@@ -654,7 +650,7 @@ class AudioManagerAndroid {
         // higher, retrieve it through getSystemService(String) with
         // BLUETOOTH_SERVICE.
         BluetoothAdapter btAdapter = null;
-        if (runningOnJellyBeanMR2OrHigher()) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
             // Use BluetoothManager to get the BluetoothAdapter for
             // Android 4.3 and above.
             BluetoothManager btManager =