Move C++ flags for Android to cxxflags section

build/android.gypi

Index: build/android.gypi
diff --git a/build/android.gypi b/build/android.gypi
index f984ea3af61b32b9728b58378eb6cb5c7d281d37..627dcc2678246e0af2851239635a747aae0654c4 100644
--- a/build/android.gypi
+++ b/build/android.gypi
@@ -74,13 +74,13 @@
         ],
       },  # Release
     },  # configurations
-    'cflags': [ '-Wno-abi', '-Wall', '-W', '-Wno-unused-parameter',
-                '-Wnon-virtual-dtor', '-fno-rtti', '-fno-exceptions',
-                # Note: Using -std=c++0x will define __STRICT_ANSI__, which in
-                # turn will leave out some template stuff for 'long long'. What
-                # we want is -std=c++11, but this is not supported by GCC 4.6 or
-                # Xcode 4.2
-                '-std=gnu++0x' ],
+    'cflags': [ '-Wno-abi', '-Wall', '-W', '-Wno-unused-parameter'],
+    'cflags_cc': [ '-Wnon-virtual-dtor', '-fno-rtti', '-fno-exceptions',
+                   # Note: Using -std=c++0x will define __STRICT_ANSI__, which
+                   # in turn will leave out some template stuff for 'long
+                   # long'.  What we want is -std=c++11, but this is not
+                   # supported by GCC 4.6 or Xcode 4.2
+                   '-std=gnu++0x' ],
     'target_conditions': [
       ['_toolset=="target"', {
         'cflags!': [
@@ -93,11 +93,13 @@
           '-fno-short-enums',
           '-finline-limit=64',
           '-Wa,--noexecstack',
-          '-Wno-error=non-virtual-dtor',  # TODO(michaelbai): Fix warnings.
           # Note: This include is in cflags to ensure that it comes after
           # all of the includes.
           '-I<(android_include)',
         ],
+        'cflags_cc': [
+          '-Wno-error=non-virtual-dtor',  # TODO(michaelbai): Fix warnings.
+        ],
         'defines': [
           'ANDROID',
           #'__GNU_SOURCE=1',  # Necessary for clone()