Destroy all Singletons and LazyInstances between each test.

gpu/command_buffer/service/shader_translator.cc

Index: gpu/command_buffer/service/shader_translator.cc
diff --git a/gpu/command_buffer/service/shader_translator.cc b/gpu/command_buffer/service/shader_translator.cc
index 1c44ef7f63f7c279e346d11c4073aa3a78251bc1..02155e5b15a9ebfb0171adbc3850290279ee2b21 100644
--- a/gpu/command_buffer/service/shader_translator.cc
+++ b/gpu/command_buffer/service/shader_translator.cc
@@ -15,17 +15,20 @@ namespace {
 
 using gpu::gles2::ShaderTranslator;
 
+static bool g_shader_initalized = false;
+
 void FinalizeShaderTranslator(void* /* dummy */) {
   ShFinalize();
+  DCHECK(g_shader_initalized);
+  g_shader_initalized = false;
 }
 
 bool InitializeShaderTranslator() {
-  static bool initialized = false;
-  if (!initialized && ShInitialize()) {
+  if (!g_shader_initalized && ShInitialize()) {
     base::AtExitManager::RegisterCallback(&FinalizeShaderTranslator, NULL);
-    initialized = true;
+    g_shader_initalized = true;
   }
-  return initialized;
+  return g_shader_initalized;
 }
 
 #if !defined(ANGLE_SH_VERSION) || ANGLE_SH_VERSION < 108