Revert of Revert CL 117933003. Re-add resource speculative prefetching code.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 92d0dc639e5ddcb1585c38fd6766ab46293b8801..6805eab5165d2dd9848db92d41cae8fba17f6bc3 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -780,8 +780,6 @@
       'browser/net/quota_policy_channel_id_store.h',
       'browser/net/referrer.cc',
       'browser/net/referrer.h',
-      'browser/net/resource_prefetch_predictor_observer.cc',  
-      'browser/net/resource_prefetch_predictor_observer.h',
       'browser/net/safe_search_util.cc',
       'browser/net/safe_search_util.h',
       'browser/net/service_providers_win.cc',
@@ -853,20 +851,6 @@
       'browser/predictors/predictor_database_factory.h',
       'browser/predictors/predictor_table_base.cc',
       'browser/predictors/predictor_table_base.h',
-      'browser/predictors/resource_prefetch_common.cc', 
-      'browser/predictors/resource_prefetch_common.h',  
-      'browser/predictors/resource_prefetch_predictor.cc',  
-      'browser/predictors/resource_prefetch_predictor.h', 
-      'browser/predictors/resource_prefetch_predictor_factory.cc',  
-      'browser/predictors/resource_prefetch_predictor_factory.h', 
-      'browser/predictors/resource_prefetch_predictor_tab_helper.cc', 
-      'browser/predictors/resource_prefetch_predictor_tab_helper.h',  
-      'browser/predictors/resource_prefetch_predictor_tables.cc', 
-      'browser/predictors/resource_prefetch_predictor_tables.h',  
-      'browser/predictors/resource_prefetcher.cc',  
-      'browser/predictors/resource_prefetcher.h', 
-      'browser/predictors/resource_prefetcher_manager.cc',  
-      'browser/predictors/resource_prefetcher_manager.h',
       'browser/pref_service_flags_storage.cc',
       'browser/pref_service_flags_storage.h',
       'browser/prefetch/prefetch.cc',