Blink-side contiguous allocation of display items.

Source/platform/graphics/ListContainerTest.cpp

Index: Source/platform/graphics/ListContainerTest.cpp
diff --git a/Source/platform/graphics/ListContainerTest.cpp b/Source/platform/graphics/ListContainerTest.cpp
index b92b588bcb977fdb77a9bd1e13ba78e1e440cbbd..c6011c1b788493f7d395bde82ed570a3e5435657 100644
--- a/Source/platform/graphics/ListContainerTest.cpp
+++ b/Source/platform/graphics/ListContainerTest.cpp
@@ -853,6 +853,42 @@ TEST(ListContainerTest, AppendByMovingDoesNotDestruct)
     EXPECT_CALL(*mde1, Destruct());
 }
 
+TEST(ListContainerTest, AllocateWithoutConstructionDoesNotConstruct)
+{
+    static int constructorCount = 0;
+    class ConstructCounter : public SimpleDerivedElementConstructMagicNumberOne {
+    public:
+        ConstructCounter() : SimpleDerivedElementConstructMagicNumberOne()
+        {
+            constructorCount++;
+        }
+    };
+
+    ListContainer<ConstructCounter> list(kCurrentLargestDerivedElementSize);
+
+    ConstructCounter* constructCounter1 = list.allocateWithoutConstruction<ConstructCounter>();
+    EXPECT_EQ(0, constructorCount);
+    EXPECT_EQ(1u, list.size());
+    new (constructCounter1) ConstructCounter;
+    EXPECT_EQ(1, constructorCount);
+    list.allocateAndConstruct<ConstructCounter>();
+    EXPECT_EQ(2, constructorCount);
+    EXPECT_EQ(2u, list.size());
+}
+
+TEST(ListContainerTest, AppendByMovingReturnsMovedPointer)
+{
+    ListContainer<SimpleDerivedElement> list1(kCurrentLargestDerivedElementSize);
+    ListContainer<SimpleDerivedElement> list2(kCurrentLargestDerivedElementSize);
+    SimpleDerivedElement* simpleElement = list1.allocateAndConstruct<SimpleDerivedElementConstructMagicNumberOne>();
+
+    SimpleDerivedElement* movedElement1 = list2.appendByMoving(simpleElement);
+    EXPECT_EQ(list2.back(), movedElement1);
+
+    SimpleDerivedElement* movedElement2 = list1.appendByMoving(movedElement1);
+    EXPECT_EQ(list1.back(), movedElement2);

[chrishtr, 2015/06/29 17:19:16]

Assert the pointers are not equal.

[pdr., 2015/06/29 22:20:03]

Done.

+}
+
 TEST(ListContainerTest, AppendByMovingReplacesSourceWithNewDerivedElement)
 {
     ListContainer<SimpleDerivedElementConstructMagicNumberOne> list1(kCurrentLargestDerivedElementSize);