Add a Java API for UMA histograms.

base/base.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 1321 matching lines @@
           'sources': [
             'android/java/src/org/chromium/base/ApplicationStatus.java',
             'android/java/src/org/chromium/base/BuildInfo.java',
             'android/java/src/org/chromium/base/CommandLine.java',
             'android/java/src/org/chromium/base/ContentUriUtils.java',
             'android/java/src/org/chromium/base/CpuFeatures.java',
             'android/java/src/org/chromium/base/EventLog.java',
             'android/java/src/org/chromium/base/FieldTrialList.java',
             'android/java/src/org/chromium/base/ImportantFileWriterAndroid.java',
             'android/java/src/org/chromium/base/JNIUtils.java',
-            'android/java/src/org/chromium/base/library_loader/LibraryLoader.java',
+            'android/java/src/org/chromium/base/JavaHandlerThread.java',
             'android/java/src/org/chromium/base/LocaleUtils.java',
             'android/java/src/org/chromium/base/MemoryPressureListener.java',
-            'android/java/src/org/chromium/base/JavaHandlerThread.java',
             'android/java/src/org/chromium/base/PathService.java',
             'android/java/src/org/chromium/base/PathUtils.java',
             'android/java/src/org/chromium/base/PowerMonitor.java',
+            'android/java/src/org/chromium/base/SysUtils.java',
             'android/java/src/org/chromium/base/SystemMessageHandler.java',
-            'android/java/src/org/chromium/base/SysUtils.java',
             'android/java/src/org/chromium/base/ThreadUtils.java',
             'android/java/src/org/chromium/base/TraceEvent.java',
+            'android/java/src/org/chromium/base/library_loader/LibraryLoader.java',
+            'android/java/src/org/chromium/base/metrics/RecordHistogram.java',
           ],
           'variables': {
             'jni_gen_package': 'base',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
         {
           # TODO(GN)
           'target_name': 'base_unittests_jni_headers',
           'type': 'none',
@@ skipping 192 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }