Query log size properties only within logd

liblog exposed __android_logger_get_buffer_size() which queries log
size properties, but that should not be a generic library function.
Logd should be the only process that queries these properties and
other processes should query the actual used log sizes from logd via
the android_logger_get_log_*_size() functions.

Also, always use 1MB for log buffer tests, instead of just on host and
various other clean up related to improper types.

Test: log buffers are correctly sized
Merged-In: I9b7c86bf58e569618737afe9097cf1c4d4e61d95
Change-Id: I9b7c86bf58e569618737afe9097cf1c4d4e61d95
diff --git a/logd/SimpleLogBuffer.cpp b/logd/SimpleLogBuffer.cpp
index ec08d54..b00dd25 100644
--- a/logd/SimpleLogBuffer.cpp
+++ b/logd/SimpleLogBuffer.cpp
@@ -19,6 +19,7 @@
 #include <android-base/logging.h>
 
 #include "LogBufferElement.h"
+#include "LogSize.h"
 
 SimpleLogBuffer::SimpleLogBuffer(LogReaderList* reader_list, LogTags* tags, LogStatistics* stats)
     : reader_list_(reader_list), tags_(tags), stats_(stats) {
@@ -29,8 +30,8 @@
 
 void SimpleLogBuffer::Init() {
     log_id_for_each(i) {
-        if (SetSize(i, __android_logger_get_buffer_size(i))) {
-            SetSize(i, LOG_BUFFER_MIN_SIZE);
+        if (!SetSize(i, GetBufferSizeFromProperties(i))) {
+            SetSize(i, kLogBufferMinSize);
         }
     }
 
@@ -247,22 +248,22 @@
 }
 
 // get the total space allocated to "id"
-unsigned long SimpleLogBuffer::GetSize(log_id_t id) {
+size_t SimpleLogBuffer::GetSize(log_id_t id) {
     auto lock = SharedLock{lock_};
     size_t retval = max_size_[id];
     return retval;
 }
 
 // set the total space allocated to "id"
-int SimpleLogBuffer::SetSize(log_id_t id, unsigned long size) {
+bool SimpleLogBuffer::SetSize(log_id_t id, size_t size) {
     // Reasonable limits ...
-    if (!__android_logger_valid_buffer_size(size)) {
-        return -1;
+    if (!IsValidBufferSize(size)) {
+        return false;
     }
 
     auto lock = std::lock_guard{lock_};
     max_size_[id] = size;
-    return 0;
+    return true;
 }
 
 void SimpleLogBuffer::MaybePrune(log_id_t id) {