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

gpu/command_buffer/service/gles2_cmd_decoder_unittest_textures.cc

 // Copyright 2014 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/command_line.h"
@@ skipping 724 matching lines @@
   CopyTexImage2D cmd;
   cmd.Init(target, level, internal_format, 0, 0, width, height);
   EXPECT_EQ(error::kNoError, ExecuteCmd(cmd));
   EXPECT_EQ(GL_OUT_OF_MEMORY, GetGLError());
   EXPECT_FALSE(
       texture->GetLevelSize(GL_TEXTURE_2D, level, &width, &height, nullptr));
 }
 
 TEST_P(GLES2DecoderManualInitTest, CopyTexImage2DUnsizedInternalFormat) {
   base::CommandLine command_line(0, NULL);
-  command_line.AppendSwitch(switches::kEnableUnsafeES3APIs);
   InitState init;
   init.gl_version = "OpenGL ES 3.0";
   init.extensions = "GL_APPLE_texture_format_BGRA8888 GL_EXT_sRGB";
   init.has_alpha = true;
   init.request_alpha = true;
   init.bind_generates_resource = true;
   init.context_type = CONTEXT_TYPE_OPENGLES2;
   InitDecoderWithCommandLine(init, &command_line);
 
   GLenum kUnsizedInternalFormats[] = {
@@ skipping 70 matching lines @@
     if (complete) {
       EXPECT_EQ(GL_NO_ERROR, GetGLError());
     } else {
       EXPECT_EQ(GL_INVALID_FRAMEBUFFER_OPERATION, GetGLError());
     }
   }
 }
 
 TEST_P(GLES2DecoderManualInitTest, CopyTexImage2DUnsizedInternalFormatES3) {
   base::CommandLine command_line(0, NULL);
-  command_line.AppendSwitch(switches::kEnableUnsafeES3APIs);
   InitState init;
   init.gl_version = "OpenGL ES 3.0";
   init.extensions = "GL_APPLE_texture_format_BGRA8888";
   init.has_alpha = true;
   init.request_alpha = true;
   init.bind_generates_resource = true;
   init.context_type = CONTEXT_TYPE_OPENGLES3;
   InitDecoderWithCommandLine(init, &command_line);
 
   struct UnsizedSizedInternalFormat {
@@ skipping 3842 matching lines @@
 // TODO(gman): CompressedTexSubImage2DImmediate
 
 // TODO(gman): TexImage2D
 
 // TODO(gman): TexImage2DImmediate
 
 // TODO(gman): TexSubImage2DImmediate
 
 }  // namespace gles2
 }  // namespace gpu