Cache OpenGL program info on the client side of the command buffer.

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 ee7d6defe7a93087aebd251a57fc6f2aed4f0768..c3c023f28b429cf2fe79ff599a608340ae52dbbb 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -1489,7 +1489,10 @@ _FUNCTION_INFO = {
     'decoder_func': 'DoIsTexture',
     'expectation': False,
   },
-  'LinkProgram': {'decoder_func': 'DoLinkProgram'},
+  'LinkProgram': {
+    'decoder_func': 'DoLinkProgram',
+    'impl_func':  False,
+  },
   'MapBufferSubDataCHROMIUM': {
     'gen_cmd': False,
     'extension': True,
@@ -3068,7 +3071,7 @@ class DeleteHandler(TypeHandler):
       arg.WriteClientSideValidationCode(file, func)
     file.Write(
         "  GPU_CLIENT_DCHECK(%s != 0);\n" % func.GetOriginalArgs()[-1].name)
-    file.Write("  program_and_shader_id_handler_->FreeIds(1, &%s);\n" %
+    file.Write("  DeleteProgramOrShaderHelper(%s);\n" %
                func.GetOriginalArgs()[-1].name)
     file.Write("  helper_->%s(%s);\n" %
                (func.name, func.MakeCmdArgString("")))
@@ -4212,19 +4215,20 @@ class STRnHandler(TypeHandler):
       << static_cast<void*>(%(arg3)s) << ")");
   helper_->SetBucketSize(kResultBucketId, 0);
   helper_->%(func_name)s(%(id_name)s, kResultBucketId);
-  if (bufsize > 0) {
-    std::string str;
-    if (GetBucketAsString(kResultBucketId, &str)) {
-      GLsizei max_size =
+  std::string str;
+  GLsizei max_size = 0;
+  if (GetBucketAsString(kResultBucketId, &str)) {
+    if (bufsize > 0) {
+      max_size =
           std::min(static_cast<size_t>(%(bufsize_name)s) - 1, str.size());
-      if (%(length_name)s != NULL) {
-        *%(length_name)s = max_size;
-      }
       memcpy(%(dest_name)s, str.c_str(), max_size);
       %(dest_name)s[max_size] = '\\0';
       GPU_CLIENT_LOG("------\\n" << %(dest_name)s << "\\n------");
     }
   }
+  if (%(length_name)s != NULL) {
+    *%(length_name)s = max_size;
+  }
 }
 """
     args = func.GetOriginalArgs()