Invert DSF to map from delegated frame to layer space

cc/trees/layer_tree_host_unittest_delegated.cc

Index: cc/trees/layer_tree_host_unittest_delegated.cc
diff --git a/cc/trees/layer_tree_host_unittest_delegated.cc b/cc/trees/layer_tree_host_unittest_delegated.cc
index abd5e4b1e914d30f606346741517fb5463c0f7bc..57b82b8f8045c512711c61572cb1fbe790394092 100644
--- a/cc/trees/layer_tree_host_unittest_delegated.cc
+++ b/cc/trees/layer_tree_host_unittest_delegated.cc
@@ -487,8 +487,6 @@ class LayerTreeHostDelegatedTestLayerUsesFrameDamage
         break;
       case 3:
         // Should create a total amount of gfx::Rect(2, 2, 10, 6) damage.

[danakj, 2014/06/06 17:17:12]

Add a comment here explaining why 2,2,10,6 becomes 2,2,8,6?

-        // The frame size is 20x20 while the layer is 10x10, so this should
-        // produce a gfx::Rect(1, 1, 5, 3) damage rect.
         SetFrameData(
             CreateFrameData(gfx::Rect(0, 0, 20, 20), gfx::Rect(2, 2, 5, 5)));
         SetFrameData(
@@ -535,9 +533,7 @@ class LayerTreeHostDelegatedTestLayerUsesFrameDamage
                                             gfx::Rect(4, 4, 1, 1)));
         break;
       case 13:
-        // Should create gfx::Rect(1, 1, 2, 2) of damage. The frame size is
-        // 5x5 and the display size is now set to 10x10, so this should result
-        // in a gfx::Rect(2, 2, 4, 4) damage rect.
+        // Should create gfx::Rect(1, 1, 2, 2) of damage.
         SetFrameData(
             CreateFrameData(gfx::Rect(0, 0, 5, 5), gfx::Rect(1, 1, 2, 2)));
         break;
@@ -583,6 +579,7 @@ class LayerTreeHostDelegatedTestLayerUsesFrameDamage
         // ways.
         SetFrameData(
             CreateFrameData(gfx::Rect(0, 0, 10, 10), gfx::Rect(3, 3, 1, 1)));
+        break;
     }
     first_draw_for_source_frame_ = true;
   }
@@ -616,7 +613,7 @@ class LayerTreeHostDelegatedTestLayerUsesFrameDamage
         EXPECT_EQ(gfx::Rect(10, 10).ToString(), damage_rect.ToString());
         break;
       case 3:
-        EXPECT_EQ(gfx::Rect(1, 1, 5, 3).ToString(), damage_rect.ToString());
+        EXPECT_EQ(gfx::Rect(2, 2, 8, 6).ToString(), damage_rect.ToString());
         break;
       case 4:
         EXPECT_EQ(gfx::Rect().ToString(), damage_rect.ToString());
@@ -646,7 +643,7 @@ class LayerTreeHostDelegatedTestLayerUsesFrameDamage
         EXPECT_EQ(gfx::Rect().ToString(), damage_rect.ToString());
         break;
       case 13:
-        EXPECT_EQ(gfx::Rect(2, 2, 4, 4).ToString(), damage_rect.ToString());
+        EXPECT_EQ(gfx::Rect(1, 1, 2, 2).ToString(), damage_rect.ToString());
         break;
       case 14:
         EXPECT_EQ(gfx::Rect().ToString(), damage_rect.ToString());