LayerTreeHost should not modify the LayerTreeSettings object. Instead it should use a temporary va…

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index 73c3a30bcd51e8203e75d82d3a6102617a31e144..47f4f7c9a5a8d4307a7d76260a82c8bd13348738 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -2115,7 +2115,7 @@ TEST(LayerTreeHostTest, LimitPartialUpdates) {
     LayerTreeHostWithProxy host(&client, settings, proxy.Pass());
     EXPECT_TRUE(host.InitializeOutputSurfaceIfNeeded());
 
-    EXPECT_EQ(0u, host.settings().max_partial_texture_updates);
+    EXPECT_EQ(0u, host.MaxPartialTextureUpdates());
   }
 
   // When partial updates are allowed,
@@ -2133,7 +2133,7 @@ TEST(LayerTreeHostTest, LimitPartialUpdates) {
     LayerTreeHostWithProxy host(&client, settings, proxy.Pass());
     EXPECT_TRUE(host.InitializeOutputSurfaceIfNeeded());
 
-    EXPECT_EQ(5u, host.settings().max_partial_texture_updates);
+    EXPECT_EQ(5u, host.MaxPartialTextureUpdates());
   }
 
   // When partial updates are allowed,
@@ -2151,7 +2151,7 @@ TEST(LayerTreeHostTest, LimitPartialUpdates) {
     LayerTreeHostWithProxy host(&client, settings, proxy.Pass());
     EXPECT_TRUE(host.InitializeOutputSurfaceIfNeeded());
 
-    EXPECT_EQ(10u, host.settings().max_partial_texture_updates);
+    EXPECT_EQ(10u, host.MaxPartialTextureUpdates());
   }
 }
 
@@ -2188,7 +2188,7 @@ TEST(LayerTreeHostTest, PartialUpdatesWithDelegatingRendererAndGLContent) {
   scoped_ptr<LayerTreeHost> host =
       LayerTreeHost::Create(&client, settings, NULL);
   EXPECT_TRUE(host->InitializeOutputSurfaceIfNeeded());
-  EXPECT_EQ(0u, host->settings().max_partial_texture_updates);
+  EXPECT_EQ(0u, host->MaxPartialTextureUpdates());
 }
 
 TEST(LayerTreeHostTest,
@@ -2201,7 +2201,7 @@ TEST(LayerTreeHostTest,
   scoped_ptr<LayerTreeHost> host =
       LayerTreeHost::Create(&client, settings, NULL);
   EXPECT_TRUE(host->InitializeOutputSurfaceIfNeeded());
-  EXPECT_EQ(0u, host->settings().max_partial_texture_updates);
+  EXPECT_EQ(0u, host->MaxPartialTextureUpdates());
 }
 
 class LayerTreeHostTestShutdownWithOnlySomeResourcesEvicted