Log to the webrtc log stream from webrtc/modules java code.

The purpose is to gather all webrtc logging in a single place and allow the app to redirect all webrtc logging to a single stream for offline debugging.

Moved Logging.java to webrtc/base to be shared by talk/ and modules/.

R=glaznev@webrtc.org, henrika@webrtc.org, magjed@webrtc.org, tommi@webrtc.org

Review URL: https://codereview.webrtc.org/1335103004 .

Cr-Commit-Position: refs/heads/master@{#9959}

webrtc/modules/modules_java.gyp

@@ -13,7 +13,9 @@
       'type': 'none',
       'variables': {
         'java_in_dir': 'audio_device/android/java',
+        'additional_src_dirs': [ '../base/java/src', ],
       },
+
       'includes': [ '../../build/java.gypi' ],
     }, # audio_device_module_java
     {
@@ -24,6 +26,7 @@
       ],
       'variables': {
         'java_in_dir': 'video_capture/android/java',
+        'additional_src_dirs': [ '../base/java/src', ],
       },
       'includes': [ '../../build/java.gypi' ],
     }, # video_capture_module_java
@@ -32,6 +35,7 @@
       'type': 'none',
       'variables': {
         'java_in_dir': 'video_render/android/java',
+        'additional_src_dirs': [ '../base/java/src', ],
       },
       'includes': [ '../../build/java.gypi' ],
     }, # video_render_module_java