gfx: Add FrameTime and DisplayTime classes

cc/resources/resource_update_controller.cc

Index: cc/resources/resource_update_controller.cc
diff --git a/cc/resources/resource_update_controller.cc b/cc/resources/resource_update_controller.cc
index 59c536b0844b495712447d1ec17c31c627915b85..29fa4dd258a9473b758fc90909768faa80d5d3ce 100644
--- a/cc/resources/resource_update_controller.cc
+++ b/cc/resources/resource_update_controller.cc
@@ -56,7 +56,7 @@ ResourceUpdateController::ResourceUpdateController(
 ResourceUpdateController::~ResourceUpdateController() {}
 
 void ResourceUpdateController::PerformMoreUpdates(
-    base::TimeTicks time_limit) {
+    gfx::FrameTime time_limit) {
   time_limit_ = time_limit;
 
   // Update already in progress.
@@ -113,7 +113,7 @@ void ResourceUpdateController::OnTimerFired() {
     client_->ReadyToFinalizeTextureUpdates();
 }
 
-base::TimeTicks ResourceUpdateController::Now() const {
+gfx::FrameTime ResourceUpdateController::Now() const {
   return gfx::FrameTime::Now();
 }
 
@@ -142,7 +142,8 @@ bool ResourceUpdateController::UpdateMoreTexturesIfEnoughTimeRemaining() {
 
     if (!time_limit_.is_null()) {
       // Estimated completion time of all pending updates.
-      base::TimeTicks completion_time = Now() + PendingUpdateTime();
+      gfx::FrameTime completion_time =
+          Now() + PendingUpdateTime();
 
       // Time remaining based on current completion estimate.
       base::TimeDelta time_remaining = time_limit_ - completion_time;