VT: Rename DocumentTransition to ViewTransitions

R=khushalsagar@chromium.org, bokan@chromium.org

Change-Id: I44926449ef6f5731719484df924de56bd23bf63b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3993505
Reviewed-by: Khushal Sagar <khushalsagar@chromium.org>
Commit-Queue: Vladimir Levin <vmpstr@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Reviewed-by: Stephen Chenney <schenney@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/main@{#1067633}

diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index 96e1c03..f0690ee 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn

@@ -33,10 +33,6 @@
     "benchmarks/unittest_only_benchmark.h",
     "benchmarks/unittest_only_benchmark_impl.cc",
     "benchmarks/unittest_only_benchmark_impl.h",
-    "document_transition/document_transition_request.cc",
-    "document_transition/document_transition_request.h",
-    "document_transition/document_transition_shared_element_id.cc",
-    "document_transition/document_transition_shared_element_id.h",
     "input/actively_scrolling_type.h",
     "input/browser_controls_offset_manager.cc",
     "input/browser_controls_offset_manager.h",
@@ -81,10 +77,6 @@
     "layers/content_layer_client.h",
     "layers/deadline_policy.cc",
     "layers/deadline_policy.h",
-    "layers/document_transition_content_layer.cc",
-    "layers/document_transition_content_layer.h",
-    "layers/document_transition_content_layer_impl.cc",
-    "layers/document_transition_content_layer_impl.h",
     "layers/draw_mode.h",
     "layers/draw_properties.cc",
     "layers/draw_properties.h",
@@ -163,6 +155,10 @@
     "layers/video_layer.h",
     "layers/video_layer_impl.cc",
     "layers/video_layer_impl.h",
+    "layers/view_transition_content_layer.cc",
+    "layers/view_transition_content_layer.h",
+    "layers/view_transition_content_layer_impl.cc",
+    "layers/view_transition_content_layer_impl.h",
     "layers/viewport.cc",
     "layers/viewport.h",
     "metrics/average_lag_tracker.cc",
@@ -443,6 +439,10 @@
     "trees/viewport_layers.cc",
     "trees/viewport_layers.h",
     "trees/viewport_property_ids.h",
+    "view_transition/view_transition_request.cc",
+    "view_transition/view_transition_request.h",
+    "view_transition/view_transition_shared_element_id.cc",
+    "view_transition/view_transition_shared_element_id.h",
   ]
 
   public_deps = [
@@ -689,7 +689,6 @@
     "base/unique_notifier_unittest.cc",
     "benchmarks/micro_benchmark_controller_unittest.cc",
     "debug/rendering_stats_unittest.cc",
-    "document_transition/document_transition_request_unittest.cc",
     "input/browser_controls_offset_manager_unittest.cc",
     "input/main_thread_scrolling_reason_unittest.cc",
     "input/scroll_snap_data_unittest.cc",
@@ -824,6 +823,7 @@
     "trees/throttle_decider_unittest.cc",
     "trees/tree_synchronizer_unittest.cc",
     "trees/ukm_manager_unittest.cc",
+    "view_transition/view_transition_request_unittest.cc",
 
     # Animation test files.
     "animation/animation_host_unittest.cc",