third_party/protobuf: update to upstream r412.

1) Got an upstream diff 411:412 from svn
2) Applied
3) Modified protobuf.gyp to make it platform independent thanks to the new
   guards added in atomicops_internals_x86_gcc.cc and
   atomicops_internals_x86_msvc.cc.
   Note that the previous change adding atomicops added a significant
   complexity to protobuf.gyp to handle platform-specific source files. Because
   it was using target_arch only, it did not even work properly. Indeed
   protobuf_lite needs to deal with the host architecture when it is built to
   be used by protoc.


Review URL: http://codereview.chromium.org/9706016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126922 0039d316-1c4b-4281-b951-d872f2087c98

third_party/protobuf/README.chromium

@@ -3,7 +3,7 @@ Short Name: protobuf
 URL: http://protobuf.googlecode.com/svn/trunk
 License File: COPYING.txt
 Version: unknown
-Revision: r411
+Revision: r412
 Security Critical: yes
 
 Local files (not taken from upstream):

third_party/protobuf/protobuf.gyp

@@ -41,6 +41,13 @@
       'toolsets': ['host', 'target'],
       'sources': [
         'src/google/protobuf/stubs/atomicops.h',
+        'src/google/protobuf/stubs/atomicops_internals_arm_gcc.h',
+        'src/google/protobuf/stubs/atomicops_internals_mips_gcc.h',
+        'src/google/protobuf/stubs/atomicops_internals_x86_gcc.cc',
+        'src/google/protobuf/stubs/atomicops_internals_x86_gcc.h',
+        'src/google/protobuf/stubs/atomicops_internals_x86_macosx.h',
+        'src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc',
+        'src/google/protobuf/stubs/atomicops_internals_x86_msvc.h',
         'src/google/protobuf/stubs/common.h',
         'src/google/protobuf/stubs/once.h',
         'src/google/protobuf/stubs/platform_macros.h',
@@ -72,36 +79,6 @@
         'src/google/protobuf/io/zero_copy_stream_impl_lite.cc',
         '<(config_h_dir)/config.h',
       ],
-      'conditions': [
-        ['OS == "win"', {
-          'sources+': [
-            'src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc',
-            'src/google/protobuf/stubs/atomicops_internals_x86_msvc.h',
-          ],
-        }],
-        ['OS == "mac"', {
-          'sources+': [
-            'src/google/protobuf/stubs/atomicops_internals_x86_macosx.h',
-          ],
-        }],
-        ['"<(target_arch)" == "arm"', {
-          'sources+': [
-            'src/google/protobuf/stubs/atomicops_internals_arm_gcc.h',
-          ],
-        }],
-        ['"<(target_arch)" == "mips"', {
-          'sources+': [
-            'src/google/protobuf/stubs/atomicops_internals_mips_gcc.h',
-          ],
-        }],
-        ['"<(target_arch)" == "ia32" or "<(target_arch)" == "x64"', {
-          'sources+': [
-            'src/google/protobuf/stubs/atomicops_internals_x86_gcc.cc',
-            'src/google/protobuf/stubs/atomicops_internals_x86_gcc.h',
-          ],
-        }],
-      ],
-
       'include_dirs': [
         '<(config_h_dir)',
         'src',

third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_x86_gcc.cc

@@ -33,7 +33,7 @@
 
 #include <cstring>
 
-#include "atomicops.h"
+#include <google/protobuf/stubs/atomicops.h>
 
 // This file only makes sense with atomicops_internals_x86_gcc.h -- it
 // depends on structs that are defined in that file.  If atomicops.h

third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc

@@ -33,6 +33,8 @@
 
 #include <google/protobuf/stubs/atomicops.h>
 
+#ifdef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_X86_MSVC_H_
+
 #include <windows.h>
 
 namespace google {
@@ -103,4 +105,5 @@ Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr,
 }  // namespace protobuf
 }  // namespace google
 
+#endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_X86_MSVC_H_
 #endif  // GOOGLE_PROTOBUF_NO_THREADSAFETY