Replace 'ap' with 'up' suffix in variable names. (NFC)

The `ap` suffix is a remnant of lldb's former use of auto pointers,
before they got deprecated. Although all their uses were replaced by
unique pointers, some variables still carried the suffix.

In r353795 I removed another auto_ptr remnant, namely redundant calls to
::get for unique_pointers. Jim justly noted that this is a good
opportunity to clean up the variable names as well.

I went over all the changes to ensure my find-and-replace didn't have
any undesired side-effects. I hope I didn't miss any, but if you end up
at this commit doing a git blame on a weirdly named variable, please
know that the change was unintentional.

llvm-svn: 353912
diff --git a/lldb/source/API/SBStream.cpp b/lldb/source/API/SBStream.cpp
index 2e70985..11479d5 100644
--- a/lldb/source/API/SBStream.cpp
+++ b/lldb/source/API/SBStream.cpp
@@ -17,31 +17,31 @@
 using namespace lldb;
 using namespace lldb_private;
 
-SBStream::SBStream() : m_opaque_ap(new StreamString()), m_is_file(false) {}
+SBStream::SBStream() : m_opaque_up(new StreamString()), m_is_file(false) {}
 
 SBStream::SBStream(SBStream &&rhs)
-    : m_opaque_ap(std::move(rhs.m_opaque_ap)), m_is_file(rhs.m_is_file) {}
+    : m_opaque_up(std::move(rhs.m_opaque_up)), m_is_file(rhs.m_is_file) {}
 
 SBStream::~SBStream() {}
 
-bool SBStream::IsValid() const { return (m_opaque_ap != NULL); }
+bool SBStream::IsValid() const { return (m_opaque_up != NULL); }
 
 // If this stream is not redirected to a file, it will maintain a local cache
 // for the stream data which can be accessed using this accessor.
 const char *SBStream::GetData() {
-  if (m_is_file || m_opaque_ap == NULL)
+  if (m_is_file || m_opaque_up == NULL)
     return NULL;
 
-  return static_cast<StreamString *>(m_opaque_ap.get())->GetData();
+  return static_cast<StreamString *>(m_opaque_up.get())->GetData();
 }
 
 // If this stream is not redirected to a file, it will maintain a local cache
 // for the stream output whose length can be accessed using this accessor.
 size_t SBStream::GetSize() {
-  if (m_is_file || m_opaque_ap == NULL)
+  if (m_is_file || m_opaque_up == NULL)
     return 0;
 
-  return static_cast<StreamString *>(m_opaque_ap.get())->GetSize();
+  return static_cast<StreamString *>(m_opaque_up.get())->GetSize();
 }
 
 void SBStream::Printf(const char *format, ...) {
@@ -58,11 +58,11 @@
     return;
 
   std::string local_data;
-  if (m_opaque_ap) {
+  if (m_opaque_up) {
     // See if we have any locally backed data. If so, copy it so we can then
     // redirect it to the file so we don't lose the data
     if (!m_is_file)
-      local_data = static_cast<StreamString *>(m_opaque_ap.get())->GetString();
+      local_data = static_cast<StreamString *>(m_opaque_up.get())->GetString();
   }
   StreamFile *stream_file = new StreamFile;
   uint32_t open_options = File::eOpenOptionWrite | File::eOpenOptionCanCreate;
@@ -73,15 +73,15 @@
 
   FileSystem::Instance().Open(stream_file->GetFile(), FileSpec(path),
                               open_options);
-  m_opaque_ap.reset(stream_file);
+  m_opaque_up.reset(stream_file);
 
-  if (m_opaque_ap) {
+  if (m_opaque_up) {
     m_is_file = true;
 
     // If we had any data locally in our StreamString, then pass that along to
     // the to new file we are redirecting to.
     if (!local_data.empty())
-      m_opaque_ap->Write(&local_data[0], local_data.size());
+      m_opaque_up->Write(&local_data[0], local_data.size());
   } else
     m_is_file = false;
 }
@@ -91,63 +91,63 @@
     return;
 
   std::string local_data;
-  if (m_opaque_ap) {
+  if (m_opaque_up) {
     // See if we have any locally backed data. If so, copy it so we can then
     // redirect it to the file so we don't lose the data
     if (!m_is_file)
-      local_data = static_cast<StreamString *>(m_opaque_ap.get())->GetString();
+      local_data = static_cast<StreamString *>(m_opaque_up.get())->GetString();
   }
-  m_opaque_ap.reset(new StreamFile(fh, transfer_fh_ownership));
+  m_opaque_up.reset(new StreamFile(fh, transfer_fh_ownership));
 
-  if (m_opaque_ap) {
+  if (m_opaque_up) {
     m_is_file = true;
 
     // If we had any data locally in our StreamString, then pass that along to
     // the to new file we are redirecting to.
     if (!local_data.empty())
-      m_opaque_ap->Write(&local_data[0], local_data.size());
+      m_opaque_up->Write(&local_data[0], local_data.size());
   } else
     m_is_file = false;
 }
 
 void SBStream::RedirectToFileDescriptor(int fd, bool transfer_fh_ownership) {
   std::string local_data;
-  if (m_opaque_ap) {
+  if (m_opaque_up) {
     // See if we have any locally backed data. If so, copy it so we can then
     // redirect it to the file so we don't lose the data
     if (!m_is_file)
-      local_data = static_cast<StreamString *>(m_opaque_ap.get())->GetString();
+      local_data = static_cast<StreamString *>(m_opaque_up.get())->GetString();
   }
 
-  m_opaque_ap.reset(new StreamFile(::fdopen(fd, "w"), transfer_fh_ownership));
-  if (m_opaque_ap) {
+  m_opaque_up.reset(new StreamFile(::fdopen(fd, "w"), transfer_fh_ownership));
+  if (m_opaque_up) {
     m_is_file = true;
 
     // If we had any data locally in our StreamString, then pass that along to
     // the to new file we are redirecting to.
     if (!local_data.empty())
-      m_opaque_ap->Write(&local_data[0], local_data.size());
+      m_opaque_up->Write(&local_data[0], local_data.size());
   } else
     m_is_file = false;
 }
 
-lldb_private::Stream *SBStream::operator->() { return m_opaque_ap.get(); }
+lldb_private::Stream *SBStream::operator->() { return m_opaque_up.get(); }
 
-lldb_private::Stream *SBStream::get() { return m_opaque_ap.get(); }
+lldb_private::Stream *SBStream::get() { return m_opaque_up.get(); }
 
 lldb_private::Stream &SBStream::ref() {
-  if (m_opaque_ap == NULL)
-    m_opaque_ap.reset(new StreamString());
-  return *m_opaque_ap;
+  if (m_opaque_up == NULL)
+    m_opaque_up.reset(new StreamString());
+  return *m_opaque_up;
 }
 
 void SBStream::Clear() {
-  if (m_opaque_ap) {
+  if (m_opaque_up) {
     // See if we have any locally backed data. If so, copy it so we can then
     // redirect it to the file so we don't lose the data
     if (m_is_file)
-      m_opaque_ap.reset();
+      m_opaque_up.reset();
     else
-      static_cast<StreamString *>(m_opaque_ap.get())->Clear();
+      static_cast<StreamString *>(m_opaque_up.get())->Clear();
   }
 }