Return TotalMemory size when ddr size is not present

When the ddr size is not present or it is invalid, getAdvertisedMem()
must return getTotalMemory() size.

Bug: 278977257
Test: atest frameworks/base/core/tests/coretests/src/android/os/ProcessTest.java
Merged-In: I2323d79d869a4c58eb29d0cae351144f357b867d
Change-Id: I2323d79d869a4c58eb29d0cae351144f357b867d

core/java/android/os/Process.java

@@ -1359,7 +1359,7 @@ public class Process {
         String formatSize = MemoryProperties.memory_ddr_size().orElse("0KB");
         long memSize = FileUtils.parseSize(formatSize);
 
-        if (memSize == Long.MIN_VALUE) {
+        if (memSize <= 0) {
             return FileUtils.roundStorageSize(getTotalMemory());
         }
 

core/tests/coretests/src/android/os/ProcessTest.java

@@ -73,6 +73,7 @@ public class ProcessTest extends TestCase {
     }
 
     public void testGetAdvertisedMem() {
+        assertTrue(Process.getAdvertisedMem() > 0);
         assertTrue(Process.getTotalMemory() <= Process.getAdvertisedMem());
     }
 }