Recognize more Clang-Tidy google warning patterns.

* Many AOSP C/C++ code have google-readability warnings.

Bug: http://b/27779618
Change-Id: Ic7d33b957da5c1062410f48ef18bb68a5aa259e9
diff --git a/tools/warn.py b/tools/warn.py
index 9fe6925..14b3f48 100755
--- a/tools/warn.py
+++ b/tools/warn.py
@@ -646,6 +646,12 @@
         'description':'clang-tidy google-explicit',
         'patterns':[r".*: .+\[google-explicit-.+\]$"] },
     { 'category':'C/C++',   'severity':severity.TIDY,     'members':[], 'option':'',
+        'description':'clang-tidy google-readability',
+        'patterns':[r".*: .+\[google-readability-.+\]$"] },
+    { 'category':'C/C++',   'severity':severity.TIDY,     'members':[], 'option':'',
+        'description':'clang-tidy google-global',
+        'patterns':[r".*: .+\[google-global-.+\]$"] },
+    { 'category':'C/C++',   'severity':severity.TIDY,     'members':[], 'option':'',
         'description':'clang-tidy modernize',
         'patterns':[r".*: .+\[modernize-.+\]$"] },
     { 'category':'C/C++',   'severity':severity.TIDY,     'members':[], 'option':'',