Address NewApi lint warnings in src/printing.

build/android/lint/suppressions.xml

 <?xml version="1.0" encoding="utf-8"?>
 <lint>
   <!--
 STOP! It looks like you want to suppress some lint errors:
 - Have you tried identifing the offending patch?
   Ask the author for a fix and/or revert the patch.
 - It is preferred to add suppressions in the code instead of
   sweeping it under the rug here. See:
 
     http://developer.android.com/tools/debugging/improving-w-lint.html
@@ skipping 76 matching lines @@
     <ignore path="org/chromium/content/browser/accessibility/LollipopBrowserAccessibilityManager.class"/>
     <ignore path="org/chromium/device/battery/BatteryStatusManager.class"/>
     <ignore path="org/chromium/media/AudioManagerAndroid.class"/>
     <ignore path="org/chromium/media/MediaCodecBridge.class"/>
     <ignore path="org/chromium/media/MediaDrmBridge.class"/>
     <ignore path="org/chromium/media/MediaDrmBridge$*.class"/>
     <ignore path="org/chromium/media/VideoCaptureCamera.class"/>
     <ignore path="org/chromium/media/VideoCaptureCamera2.class"/>
     <ignore path="org/chromium/media/VideoCaptureCamera2$*.class"/>
     <ignore path="org/chromium/media/WebAudioMediaCodecBridge.class"/>
-    <ignore path="org/chromium/printing/PrintDocumentAdapterWrapper.class"/>
-    <ignore path="org/chromium/printing/PrintManagerDelegateImpl.class"/>
-    <ignore path="org/chromium/printing/PrintingControllerImpl.class"/>
     <ignore path="org/chromium/ui/base/Clipboard.class"/>
     <ignore path="org/chromium/ui/ColorPickerAdvancedComponent.class"/>
     <ignore path="org/chromium/ui/gfx/DeviceDisplayInfo.class"/>
     <ignore path="org/chromium/ui/gl/SurfaceTexturePlatformWrapper.class"/>
     <ignore path="org/chromium/ui/widget/TextViewWithClickableSpans.class"/>
     <ignore path="org/chromium/ui/picker/TwoFieldDatePicker.class"/>
   </issue>
   <issue id="OldTargetApi">
     <ignore path="AndroidManifest.xml"/>
   </issue>
@@ skipping 11 matching lines @@
     <!-- These files are used by chrome_shell_apk and chrome_apk targets. -->
     <ignore path="chrome/android/java/res/layout/accessibility_tab_switcher.xml" />
     <ignore path="chrome/android/java/res/drawable/btn_back.xml" />
     <ignore path="chrome/android/java/res/drawable/btn_forward.xml" />
   </issue>
   <issue id="SignatureOrSystemPermissions" severity="ignore"/>
   <issue id="UnusedAttribute" severity="ignore"/>
   <issue id="ViewConstructor" severity="ignore"/>
   <issue id="WrongCall" severity="ignore"/>
 </lint>