Convert most run_all_unittests.cc files to use new unit test launcher.

printing/printing.gyp

Index: printing/printing.gyp
diff --git a/printing/printing.gyp b/printing/printing.gyp
index 890e5bfe5877b0f9436b082ce386925694e50881..8834611b36b2145b25df40c7cf254eb9e028a4dc 100644
--- a/printing/printing.gyp
+++ b/printing/printing.gyp
@@ -242,6 +242,7 @@
       'dependencies': [
         'printing',
         '../testing/gtest.gyp:gtest',
+        '../base/base.gyp:run_all_unittests',
         '../base/base.gyp:test_support_base',
         '../ui/ui.gyp:ui',
       ],
@@ -254,14 +255,12 @@
         'page_setup_unittest.cc',
         'pdf_metafile_cg_mac_unittest.cc',
         'printed_page_unittest.cc',
-        'run_all_unittests.cc',
         'units_unittest.cc',
       ],
       'conditions': [
         ['enable_printing==0', {
           'sources/': [
             ['exclude', '.'],
-            ['include', 'run_all_unittests.cc'],
           ],
         }],
         ['toolkit_uses_gtk == 0', {'sources/': [['exclude', '_gtk_unittest\\.cc$']]}],