command_buffer_gles2: Add test command_buffer_gles2_test for command_buffer_gles2

base/at_exit.cc

Index: base/at_exit.cc
diff --git a/base/at_exit.cc b/base/at_exit.cc
index 0fba355698fbebc643fd3225d1323ec64964eb7d..05efa021499c6c5a8967fe0b1a379d4c9ee7f700 100644
--- a/base/at_exit.cc
+++ b/base/at_exit.cc
@@ -24,7 +24,7 @@ static AtExitManager* g_top_manager = NULL;
 AtExitManager::AtExitManager() : next_manager_(g_top_manager) {
 // If multiple modules instantiate AtExitManagers they'll end up living in this
 // module... they have to coexist.
-#if !defined(COMPONENT_BUILD)
+#if !defined(COMPONENT_BUILD) && !defined(COMMAND_BUFFER_GLES_LIB_SUPPORT_ONLY)

[Nico, 2016/02/01 19:15:37]

having base know about some gpu define seems wrong. why "command_buffer_gles2
should build a shared library in all configurations"?

   DCHECK(!g_top_manager);
 #endif
   g_top_manager = this;