adjust browser_tests drmemory exclusion list to find suitable tests

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

Index: tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory_win32.txt
diff --git a/tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory_win32.txt b/tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory_win32.txt
index 5f68c7f1aefdaec3374af4847b837dbdcdd95541..012bcff12ff3a44a9b277ea395cdfe69856a40e1 100644
--- a/tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory_win32.txt
+++ b/tools/valgrind/gtest_exclude/browser_tests.gtest-drmemory_win32.txt
@@ -8,30 +8,18 @@
 
 # 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.*
-# BrowserAccessibilityStateImplTest.*
+# A*
 B*
-# C*: ~190 tests
+C*
 D*
 E*
 F*
 G*
-# H*: ~52  tests
-# DrM-i#1052-c#53
-HistoryWebUITest.*
-# I*: ~10  tests
-# DrM-i#1052-c#53
-InfoBarsTest.*
-# DrM-i#1052-c#56
-InspectUITest.*
-# J*: 0    tests
-# K*: 1    tests
-# L*: 62   tests
+H*
+I*
+J*
+K*
+L*
 M*
 N*
 O*
@@ -40,21 +28,9 @@ Q*
 R*
 S*
 T*
-# U*: ~20  tests
-# DrM-i#1052-c#53
-UnloadTest.*
-# V*: 5    tests
-# W*: ~150 tests
+U*
+V*
 W*
-# X*: 0    tests
-# Y*: 0    tests
-# Z*: 0    tests
-
-# http://crbug.com/302993
-InstantNTPURLRewriteTest.UberURLHandler_InstantExtendedNewTabPage
-
-# http://crbug.com/328936
-IEImporterBrowserTest.IEImporter
-
-# http://crbug.com/332219
-IEImporterBrowserTest.IEImporterMalformedFavoritesRegistry
+X*
+Y*
+Z*