Update from https://crrev.com/315085

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index b0884b676487356b834c89840ab9cd444088bd87..dc576d7d7b0cf56d4bdf94e93618c5bf709dd92e 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -1508,6 +1508,10 @@ _FUNCTION_INFO = {
     'type': 'Bind',
     'id_mapping': [ 'Buffer' ],
     'gen_func': 'GenBuffersARB',
+    'valid_args': {
+      '3': '4',
+      '4': '4'
+    },
     'unsafe': True,
   },
   'BindFramebuffer': {
@@ -2030,6 +2034,15 @@ _FUNCTION_INFO = {
       'uint32_t type',
     ],
   },
+  'GetActiveUniformBlockName': {
+    'type': 'Custom',
+    'data_transfer_methods': ['shm'],
+    'cmd_args':
+        'GLidProgram program, GLuint index, uint32_t name_bucket_id, '
+        'void* result',
+    'result': ['int32_t'],
+    'unsafe': True,
+  },
   'GetAttachedShaders': {
     'type': 'Custom',
     'data_transfer_methods': ['shm'],
@@ -2200,7 +2213,27 @@ _FUNCTION_INFO = {
     'get_len_enum': 'GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE',
     'unit_test': False,
     'extension': True,
-    },
+  },
+  'GetUniformBlockIndex': {
+    'type': 'Custom',
+    'data_transfer_methods': ['shm'],
+    'cmd_args':
+        'GLidProgram program, uint32_t name_bucket_id, GLuint* index',
+    'result': ['GLuint'],
+    'error_return': 'GL_INVALID_INDEX',
+    'unsafe': True,
+  },
+  'GetUniformBlocksCHROMIUM': {
+    'type': 'Custom',
+    'expectation': False,
+    'impl_func': False,
+    'extension': True,
+    'chromium': True,
+    'client_test': False,
+    'cmd_args': 'GLidProgram program, uint32_t bucket_id',
+    'result': ['uint32_t'],
+    'unsafe': True,
+  },
   'GetUniformfv': {
     'type': 'Custom',
     'data_transfer_methods': ['shm'],
@@ -3021,6 +3054,13 @@ _FUNCTION_INFO = {
     'chromium': True,
     'client_test': False,
   },
+  'OrderingBarrierCHROMIUM': {
+    'impl_func': False,
+    'gen_cmd': False,
+    'extension': True,
+    'chromium': True,
+    'client_test': False,
+  },
   'TraceBeginCHROMIUM': {
     'type': 'Custom',
     'impl_func': False,