FBTF: Fix more ctor/dtors found by clang plugin.

gpu/command_buffer/service/buffer_manager.cc

Index: gpu/command_buffer/service/buffer_manager.cc
diff --git a/gpu/command_buffer/service/buffer_manager.cc b/gpu/command_buffer/service/buffer_manager.cc
index 2abc764caaf69495bf4e28b8ab336fdc92024374..70c5ccbadba372ae7aecdaee5ba88ed09748469d 100644
--- a/gpu/command_buffer/service/buffer_manager.cc
+++ b/gpu/command_buffer/service/buffer_manager.cc
@@ -10,6 +10,10 @@
 namespace gpu {
 namespace gles2 {
 
+BufferManager::BufferManager()
+    : allow_buffers_on_multiple_targets_(false) {
+}
+
 BufferManager::~BufferManager() {
   DCHECK(buffer_infos_.empty());
 }
@@ -50,6 +54,15 @@ void BufferManager::RemoveBufferInfo(GLuint client_id) {
   }
 }
 
+BufferManager::BufferInfo::BufferInfo(GLuint service_id)
+    : service_id_(service_id),
+      target_(0),
+      size_(0),
+      shadowed_(false) {
+}
+
+BufferManager::BufferInfo::~BufferInfo() { }
+
 void BufferManager::BufferInfo::SetSize(GLsizeiptr size, bool shadow) {
   DCHECK(!IsDeleted());
   if (size != size_ || shadow != shadowed_) {