Remove unused Interests code.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 4fb2a02aacc4f01a6a42d5b160f2f94aae6414a7..0e62658bd9c1a220fb17754b8ad283cff1f84e70 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -306,8 +306,6 @@
       'browser/install_verification/win/module_list.h',
       'browser/install_verification/win/module_verification_common.cc',
       'browser/install_verification/win/module_verification_common.h',
-      'browser/interests/interests_fetcher.cc',
-      'browser/interests/interests_fetcher.h',
       'browser/internal_auth.cc',
       'browser/internal_auth.h',
       'browser/interstitials/chrome_controller_client.cc',
@@ -996,8 +994,6 @@
       'browser/download/download_request_infobar_delegate_android.h',
       'browser/geolocation/geolocation_infobar_delegate_android.cc',
       'browser/geolocation/geolocation_infobar_delegate_android.h',
-      'browser/interests/android/interests_service.cc',
-      'browser/interests/android/interests_service.h',
       'browser/invalidation/invalidation_service_factory_android.cc',
       'browser/invalidation/invalidation_service_factory_android.h',
       'browser/lifetime/application_lifetime_android.cc',
@@ -2004,7 +2000,6 @@
       'android/java/src/org/chromium/chrome/browser/net/spdyproxy/DataReductionProxySettings.java',
       'android/java/src/org/chromium/chrome/browser/notifications/NotificationPlatformBridge.java',
       'android/java/src/org/chromium/chrome/browser/ntp/ForeignSessionHelper.java',
-      'android/java/src/org/chromium/chrome/browser/ntp/interests/InterestsService.java',
       'android/java/src/org/chromium/chrome/browser/ntp/LogoBridge.java',
       'android/java/src/org/chromium/chrome/browser/ntp/NewTabPagePrefs.java',
       'android/java/src/org/chromium/chrome/browser/ntp/RecentlyClosedBridge.java',