Remove unsafe mode to enable es3 api by default for WebGL2 and ES3 context

gpu/command_buffer/service/gles2_cmd_decoder_unittest_3.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
@@ skipping 25 matching lines @@
  public:
   GLES2DecoderTest3() { }
 };
 
 class GLES3DecoderTest3 : public GLES2DecoderTest3 {
  public:
   GLES3DecoderTest3() { shader_language_version_ = 300; }
  protected:
   void SetUp() override {
     base::CommandLine command_line(0, nullptr);
-    command_line.AppendSwitch(switches::kEnableUnsafeES3APIs);
     InitState init;
     init.gl_version = "OpenGL ES 3.0";
     init.bind_generates_resource = true;
     init.context_type = CONTEXT_TYPE_OPENGLES3;
     InitDecoderWithCommandLine(init, &command_line);
   }
 };
 
 INSTANTIATE_TEST_CASE_P(Service, GLES2DecoderTest3, ::testing::Bool());
 INSTANTIATE_TEST_CASE_P(Service, GLES3DecoderTest3, ::testing::Bool());
@@ skipping 110 matching lines @@
 
   end_cmd.Init();
   EXPECT_EQ(error::kNoError, ExecuteCmd(end_cmd));
   EXPECT_EQ(GL_NO_ERROR, GetGLError());
 }
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder_unittest_3_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu