Add trace event for addition/removal of GPU rasterization trigger

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 ce8381f9d76004c9738fa82d405c31c3445698c0..88dbeab656235e7685a8e36effa064f2613b3974 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -4671,7 +4671,7 @@ class LayerTreeHostTestGpuRasterizationDefault : public LayerTreeHostTest {
     EXPECT_FALSE(layer_tree_host()->UseGpuRasterization());
 
     // Setting gpu rasterization trigger does not enable gpu rasterization.
-    layer_tree_host()->set_has_gpu_rasterization_trigger(true);
+    layer_tree_host()->SetHasGpuRasterizationTrigger(true);
     EXPECT_TRUE(layer_tree_host()->has_gpu_rasterization_trigger());
     EXPECT_FALSE(layer_tree_host()->UseGpuRasterization());
 
@@ -4727,7 +4727,7 @@ class LayerTreeHostTestGpuRasterizationEnabled : public LayerTreeHostTest {
     EXPECT_FALSE(layer_tree_host()->UseGpuRasterization());
 
     // Gpu rasterization trigger is relevant.
-    layer_tree_host()->set_has_gpu_rasterization_trigger(true);
+    layer_tree_host()->SetHasGpuRasterizationTrigger(true);
     EXPECT_TRUE(layer_tree_host()->has_gpu_rasterization_trigger());
     EXPECT_TRUE(layer_tree_host()->UseGpuRasterization());
 
@@ -4792,7 +4792,7 @@ class LayerTreeHostTestGpuRasterizationForced : public LayerTreeHostTest {
 
     // With gpu rasterization forced, gpu rasterization trigger is irrelevant.
     EXPECT_TRUE(layer_tree_host()->UseGpuRasterization());
-    layer_tree_host()->set_has_gpu_rasterization_trigger(true);
+    layer_tree_host()->SetHasGpuRasterizationTrigger(true);
     EXPECT_TRUE(layer_tree_host()->has_gpu_rasterization_trigger());
     EXPECT_TRUE(layer_tree_host()->UseGpuRasterization());