Update from https://crrev.com/315085

gpu/command_buffer/tests/gl_program_unittest.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 <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
 #include "gpu/command_buffer/tests/gl_manager.h"
 #include "gpu/command_buffer/tests/gl_test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 103 matching lines @@
   glLinkProgram(program);
   // We specifically don't call UseProgram again.
   GLuint position_loc = glGetAttribLocation(program, "a_position");
   GLTestHelper::SetupUnitQuad(position_loc);
   glDrawArrays(GL_TRIANGLES, 0, 6);
   uint8 expected_color[] = { 0, 0, 255, 255, };
   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_color));
   GLTestHelper::CheckGLError("no errors", __LINE__);
 }
 
+TEST_F(GLProgramTest, ShaderLengthSpecified) {
+  const std::string valid_shader_str = SHADER(
+      attribute vec4 a_position;
+      void main()
+      {
+         gl_Position = a_position;
+      }
+  );
+
+  const std::string invalid_shader = valid_shader_str + "invalid suffix";
+
+  // Compiling invalid program should fail.
+  const char* invalid_shader_strings[] = { invalid_shader.c_str() };
+  GLuint vs = glCreateShader(GL_VERTEX_SHADER);
+  glShaderSource(vs, 1, invalid_shader_strings, NULL);
+  glCompileShader(vs);
+
+  GLint compile_state = 0;
+  glGetShaderiv(vs, GL_COMPILE_STATUS, &compile_state);
+  EXPECT_EQ(GL_FALSE, compile_state);
+
+  // Compiling program cutting off invalid parts should succeed.
+  const GLint lengths[] = { valid_shader_str.length() };
+  glShaderSource(vs, 1, invalid_shader_strings, lengths);
+  glCompileShader(vs);
+  glGetShaderiv(vs, GL_COMPILE_STATUS, &compile_state);
+  EXPECT_EQ(GL_TRUE, compile_state);
+}
+
 TEST_F(GLProgramTest, UniformsInCurrentProgram) {
   static const char* v_shader_str = SHADER(
       attribute vec4 a_position;
       void main()
       {
          gl_Position = a_position;
       }
   );
   static const char* f_shader_str = SHADER(
       precision mediump float;
@@ skipping 19 matching lines @@
   GLuint position_loc = glGetAttribLocation(program, "a_position");
   GLTestHelper::SetupUnitQuad(position_loc);
   glDrawArrays(GL_TRIANGLES, 0, 6);
   uint8 expected_color[] = { 0, 0, 255, 255, };
   EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, 1, 1, 0, expected_color));
   GLTestHelper::CheckGLError("no errors", __LINE__);
 }
 
 }  // namespace gpu