Move TestURLRequestContextGetter to url_request_test_util.{h,cc}

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index a17d34e2e2e1673ff1d266744c1d1a966ce18c4e..cd7e20e4f09266a87c4c54027b65987e01fbaa04 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -59,7 +59,6 @@
         '../ipc/ipc.gyp:test_support_ipc',
         '../media/media.gyp:media_test_support',
         '../net/net.gyp:net',
-        # 'test/base/test_url_request_context_getter.h' brings in this requirement.
         '../net/net.gyp:net_test_support',
         '../skia/skia.gyp:skia',
         '../testing/gmock.gyp:gmock',
@@ -236,8 +235,6 @@
         'test/base/test_switches.h',
         'test/base/test_tab_strip_model_observer.cc',
         'test/base/test_tab_strip_model_observer.h',
-        'test/base/test_url_request_context_getter.cc',
-        'test/base/test_url_request_context_getter.h',
         'test/base/testing_browser_process.cc',
         'test/base/testing_browser_process.h',
         'test/base/testing_pref_service.cc',
@@ -3685,6 +3682,7 @@
         '../base/base.gyp:test_support_base',
         '../jingle/jingle.gyp:notifier_test_util',
         '../net/net.gyp:net',
+        '../net/net.gyp:net_test_support',
         '../skia/skia.gyp:skia',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',