Remove built-in component and test targets from GN.

tools/gn/variables.cc

 // Copyright (c) 2013 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 "tools/gn/variables.h"
 
 namespace variables {
 
 // Built-in variables ----------------------------------------------------------
 
-const char kComponentMode[] = "component_mode";
-const char kComponentMode_HelpShort[] =
-    "component_mode: [string] Specifies the meaning of the component() call.";
-const char kComponentMode_Help[] =
-    "component_mode: Specifies the meaning of the component() call.\n"
-    "\n"
-    "  This value is looked up whenever a \"component\" target type is\n"
-    "  encountered. The value controls whether the given target is a shared\n"
-    "  or a static library.\n"
-    "\n"
-    "  The initial value will be empty, which will cause a call to\n"
-    "  component() to throw an error. Typically this value will be set in the\n"
-    "  build config script.\n"
-    "\n"
-    "Possible values:\n"
-    "  - \"shared_library\"\n"
-    "  - \"source_set\"\n"
-    "  - \"static_library\"\n";
-
 const char kCpuArch[] = "cpu_arch";
 const char kCpuArch_HelpShort[] =
     "cpu_arch: [string] Current processor architecture.";
 const char kCpuArch_Help[] =
     "cpu_arch: Current processor architecture.\n"
     "\n"
     "  The initial value is based on the current architecture of the host\n"
     "  system. However, the build configuration can set this to any value.\n"
     "\n"
     "  This value is not used internally by GN for any purpose, so you can\n"
@@ skipping 798 matching lines @@
 
 #define INSERT_VARIABLE(var) \
     info_map[k##var] = VariableInfo(k##var##_HelpShort, k##var##_Help);
 
 const VariableInfoMap& GetBuiltinVariables() {
   static VariableInfoMap info_map;
   if (info_map.empty()) {
     INSERT_VARIABLE(BuildCpuArch)
     INSERT_VARIABLE(BuildOs)
     INSERT_VARIABLE(CpuArch)
-    INSERT_VARIABLE(ComponentMode)
     INSERT_VARIABLE(CurrentToolchain)
     INSERT_VARIABLE(DefaultToolchain)
     INSERT_VARIABLE(Os)
     INSERT_VARIABLE(PythonPath)
     INSERT_VARIABLE(RootBuildDir)
     INSERT_VARIABLE(RootGenDir)
     INSERT_VARIABLE(RootOutDir)
     INSERT_VARIABLE(TargetGenDir)
     INSERT_VARIABLE(TargetOutDir)
   }
@@ skipping 30 matching lines @@
     INSERT_VARIABLE(Script)
     INSERT_VARIABLE(Sources)
     INSERT_VARIABLE(Visibility)
   }
   return info_map;
 }
 
 #undef INSERT_VARIABLE
 
 }  // namespace variables