Revert "Add UMA Histogram Manager to Cronet."

components/cronet.gypi

Index: components/cronet.gypi
diff --git a/components/cronet.gypi b/components/cronet.gypi
index 4f18ec3c15dd7f8d8b9d3ba5ddcc362d6347bc63..e2a6f08af335c4663f5fac54aed8de4e59443a4e 100644
--- a/components/cronet.gypi
+++ b/components/cronet.gypi
@@ -15,7 +15,6 @@
             'cronet/android/java/src/org/chromium/net/CronetUrlRequestContext.java',
             'cronet/android/java/src/org/chromium/net/ChromiumUrlRequest.java',
             'cronet/android/java/src/org/chromium/net/ChromiumUrlRequestContext.java',
-            'cronet/android/java/src/org/chromium/net/HistogramManager.java',
           ],
           'variables': {
             'jni_gen_package': 'cronet',
@@ -102,14 +101,12 @@
           'dependencies': [
             '../base/base.gyp:base',
             '../base/base.gyp:base_i18n',
-            '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
             '../third_party/icu/icu.gyp:icui18n',
             '../third_party/icu/icu.gyp:icuuc',
             'cronet_jni_headers',
             'cronet_url_request_context_config_list',
             'cronet_url_request_java',
             'cronet_version',
-            'metrics',
             '../net/net.gyp:net',
           ],
           'sources': [
@@ -132,8 +129,6 @@
             'cronet/android/cronet_url_request_context.h',
             'cronet/android/cronet_url_request_context_adapter.cc',
             'cronet/android/cronet_url_request_context_adapter.h',
-            'cronet/android/histogram_manager.cc',
-            'cronet/android/histogram_manager.h',
             'cronet/android/url_request_adapter.cc',
             'cronet/android/url_request_adapter.h',
             'cronet/android/url_request_context_adapter.cc',
@@ -234,7 +229,6 @@
               '**/CronetUrlRequest.java',
               '**/CronetUrlRequestContext.java',
               '**/CronetUrlRequestFactory.java',
-              '**/HistogramManager.java',
               '**/RequestPriority.java',
               '**/urlconnection/CronetInputStream.java',
               '**/urlconnection/CronetHttpURLConnection.java',