Set the browser_tests list to a subset for a better cycle time to prepare for moving bots from FYI …

tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory_win32.txt

 # TODO(zhaoqin): File bugs for those failing browser tests.
 
 # Dr.Memory i#1052: http://code.google.com/p/drmemory/issues/detail?id=1052
 #
 # The list is too long for gtest_filter, so we exclude the whole
 # test case if any of its tests failed.
 *FLAKY*
 
 # it takes too long to run all browser_tests with Dr.Memory,
 # and we only select subset to run
 # A*: ~70  tests
+A*
 # DrM-i#1052-c#52
 # AutofillTest.*
 # AcceleratedCompositingBlockedTest.*
 # AppApiTest.*
-A*
 # BrowserAccessibilityStateImplTest.*
 B*
 # C*: ~190 tests
-C*
-# D*: ~210 tests
 D*
-# E*: ~535 tests
 E*
 F*
 G*
 # H*: ~52  tests
-H*
 # DrM-i#1052-c#53
-# HistoryWebUITest.*
+HistoryWebUITest.*
 # I*: ~10  tests
-I*
 # DrM-i#1052-c#53
-# InfoBarsTest.*
+InfoBarsTest.*
 # DrM-i#1052-c#56
-# InspectUITest.*
+InspectUITest.*
 # J*: 0    tests
-J*
 # K*: 1    tests
-K*
 # L*: 62   tests
-L*
 M*
 N*
 O*
 P*
-# Q*
-# R*
-# S*
-# T*
+Q*
+R*
+S*
+T*
 # U*: ~20  tests
-U*
 # DrM-i#1052-c#53
-# UnloadTest.*
+UnloadTest.*
 # V*: 5    tests
-V*
 # W*: ~150 tests
-# W*
+W*
 # X*: 0    tests
-X*
 # Y*: 0    tests
-Y*
 # Z*: 0    tests
-Z*
 
 # http://crbug.com/302993
 InstantNTPURLRewriteTest.UberURLHandler_InstantExtendedNewTabPage
 
 # http://crbug.com/328936
 IEImporterBrowserTest.IEImporter
 
 # http://crbug.com/332219
 IEImporterBrowserTest.IEImporterMalformedFavoritesRegistry