Enable size_t to int truncation warnings in PPAPI

ppapi/ppapi_tests.gypi

Index: ppapi/ppapi_tests.gypi
diff --git a/ppapi/ppapi_tests.gypi b/ppapi/ppapi_tests.gypi
index d7bf04766a0178b6970b85908e42b20975f0f9e6..63c3370f889292ac246abc470d3864b138cec047 100644
--- a/ppapi/ppapi_tests.gypi
+++ b/ppapi/ppapi_tests.gypi
@@ -55,8 +55,6 @@
             '_CRT_NONSTDC_NO_DEPRECATE',
             '_SCL_SECURE_NO_DEPRECATE',
           ],
-          # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-          'msvs_disabled_warnings': [ 4267, ],
         }],
         ['OS=="mac"', {
           'mac_bundle': 1,
@@ -64,8 +62,6 @@
           'product_extension': 'plugin',
         }],
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
 # TODO(dmichael):  Figure out what is wrong with the script on Windows and add
 #                  it as an automated action.
 #      'actions': [
@@ -200,8 +196,6 @@
           ],
         }],
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
     },
     {
       'target_name': 'ppapi_example_skeleton',
@@ -262,8 +256,6 @@
       'sources': [
         'examples/gamepad/gamepad.cc',
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
     },
 
     {
@@ -345,8 +337,6 @@
       'sources': [
         'examples/ime/ime.cc',
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
     },
     {
       'target_name': 'ppapi_example_paint_manager',
@@ -456,8 +446,6 @@
         'examples/video_decode/video_decode.cc',
         'examples/video_decode/testdata.h',
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
     },
     {
       'target_name': 'ppapi_example_video_decode_dev',
@@ -473,8 +461,6 @@
         'examples/video_decode/video_decode_dev.cc',
         'examples/video_decode/testdata.h',
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
     },
     {
       'target_name': 'ppapi_example_vc',
@@ -529,8 +515,6 @@
       'sources': [
         'examples/printing/printing.cc',
       ],
-      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-      'msvs_disabled_warnings': [ 4267, ],
     },
     {
       'target_name': 'ppapi_example_media_stream_audio',