ART: Rename Handle hierarchy

Bring the names in line with normal OO principles: ConstHandle
becomes Handle, and Handle becomes MutableHandle.

Change-Id: I0f018eb7ba28bc422e3a23dd73a6cbe6fc2d2044
diff --git a/runtime/gc/space/space_test.h b/runtime/gc/space/space_test.h
index 0291155..7211bb4 100644
--- a/runtime/gc/space/space_test.h
+++ b/runtime/gc/space/space_test.h
@@ -181,7 +181,7 @@
   // Succeeds, fits without adjusting the footprint limit.
   size_t ptr1_bytes_allocated, ptr1_usable_size;
   StackHandleScope<3> hs(soa.Self());
-  Handle<mirror::Object> ptr1(
+  MutableHandle<mirror::Object> ptr1(
       hs.NewHandle(Alloc(space, self, 1 * MB, &ptr1_bytes_allocated, &ptr1_usable_size)));
   EXPECT_TRUE(ptr1.Get() != nullptr);
   EXPECT_LE(1U * MB, ptr1_bytes_allocated);
@@ -194,7 +194,7 @@
 
   // Succeeds, adjusts the footprint.
   size_t ptr3_bytes_allocated, ptr3_usable_size;
-  Handle<mirror::Object> ptr3(
+  MutableHandle<mirror::Object> ptr3(
       hs.NewHandle(AllocWithGrowth(space, self, 8 * MB, &ptr3_bytes_allocated, &ptr3_usable_size)));
   EXPECT_TRUE(ptr3.Get() != nullptr);
   EXPECT_LE(8U * MB, ptr3_bytes_allocated);
@@ -284,7 +284,7 @@
   // Succeeds, fits without adjusting the footprint limit.
   size_t ptr1_bytes_allocated, ptr1_usable_size;
   StackHandleScope<3> hs(soa.Self());
-  Handle<mirror::Object> ptr1(
+  MutableHandle<mirror::Object> ptr1(
       hs.NewHandle(Alloc(space, self, 1 * MB, &ptr1_bytes_allocated, &ptr1_usable_size)));
   EXPECT_TRUE(ptr1.Get() != nullptr);
   EXPECT_LE(1U * MB, ptr1_bytes_allocated);
@@ -297,7 +297,7 @@
 
   // Succeeds, adjusts the footprint.
   size_t ptr3_bytes_allocated, ptr3_usable_size;
-  Handle<mirror::Object> ptr3(
+  MutableHandle<mirror::Object> ptr3(
       hs.NewHandle(AllocWithGrowth(space, self, 8 * MB, &ptr3_bytes_allocated, &ptr3_usable_size)));
   EXPECT_TRUE(ptr3.Get() != nullptr);
   EXPECT_LE(8U * MB, ptr3_bytes_allocated);