fix [2599939] "cannot play video" after open/close a video player a dozen of times

get rid off the MAP_ONCE flag is MemoryHeapBase (as well as it's functionality),
this feature should not be used anymore.

the software renderer was incorrectly using the default ctor which set MAP_ONCE,
causing the leak. the software renderer itself is incorrectly used while coming
back from sleep.

Change-Id: I123621f8d140550b864f352bbcd8a5729db12b57
diff --git a/include/binder/IMemory.h b/include/binder/IMemory.h
index ae042cb..74d2cc7 100644
--- a/include/binder/IMemory.h
+++ b/include/binder/IMemory.h
@@ -36,8 +36,7 @@
 
     // flags returned by getFlags()
     enum {
-        READ_ONLY   = 0x00000001,
-        MAP_ONCE    = 0x00000002
+        READ_ONLY   = 0x00000001
     };
 
     virtual int         getHeapID() const = 0;
diff --git a/include/binder/MemoryHeapBase.h b/include/binder/MemoryHeapBase.h
index d793c24..2f2e31b 100644
--- a/include/binder/MemoryHeapBase.h
+++ b/include/binder/MemoryHeapBase.h
@@ -32,7 +32,6 @@
 public:
     enum {
         READ_ONLY = IMemoryHeap::READ_ONLY,
-        MAP_ONCE = IMemoryHeap::MAP_ONCE,
         // memory won't be mapped locally, but will be mapped in the remote
         // process.
         DONT_MAP_LOCALLY = 0x00000100,
diff --git a/include/binder/MemoryHeapPmem.h b/include/binder/MemoryHeapPmem.h
index aac164f..e1660c4 100644
--- a/include/binder/MemoryHeapPmem.h
+++ b/include/binder/MemoryHeapPmem.h
@@ -46,8 +46,7 @@
         sp<MemoryHeapPmem>  mClientHeap;
     };
     
-    MemoryHeapPmem(const sp<MemoryHeapBase>& pmemHeap,
-                uint32_t flags = IMemoryHeap::MAP_ONCE);
+    MemoryHeapPmem(const sp<MemoryHeapBase>& pmemHeap, uint32_t flags = 0);
     ~MemoryHeapPmem();
 
     /* HeapInterface additions */