cc: Introduce BeginFrame sequence numbers and acknowledgements.

cc/output/begin_frame_args_unittest.cc

Index: cc/output/begin_frame_args_unittest.cc
diff --git a/cc/output/begin_frame_args_unittest.cc b/cc/output/begin_frame_args_unittest.cc
index eb63cc769a115f15d513bbf1473aab7857d6bbb8..65e0e9f66a48b79d89bc9a2811efe97ce019b193 100644
--- a/cc/output/begin_frame_args_unittest.cc
+++ b/cc/output/begin_frame_args_unittest.cc
@@ -14,56 +14,79 @@ namespace {
 
 TEST(BeginFrameArgsTest, Helpers) {
   // Quick create methods work
-  BeginFrameArgs args0 = CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE);
+  BeginFrameArgs args0 =
+      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 0, 1);
   EXPECT_TRUE(args0.IsValid()) << args0;
 
   BeginFrameArgs args1 =
-      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 0, 0, -1);
+      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 0, 1, 0, 0, -1);
   EXPECT_FALSE(args1.IsValid()) << args1;
 
   BeginFrameArgs args2 =
-      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 1, 2, 3);
+      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 10, 1, 2, 3);
   EXPECT_TRUE(args2.IsValid()) << args2;
+  EXPECT_EQ(123u, args2.source_id);
+  EXPECT_EQ(10u, args2.sequence_number);
   EXPECT_EQ(1, args2.frame_time.ToInternalValue());
   EXPECT_EQ(2, args2.deadline.ToInternalValue());
   EXPECT_EQ(3, args2.interval.ToInternalValue());
   EXPECT_EQ(BeginFrameArgs::NORMAL, args2.type);
 
   BeginFrameArgs args4 = CreateBeginFrameArgsForTesting(
-      BEGINFRAME_FROM_HERE, 1, 2, 3, BeginFrameArgs::MISSED);
+      BEGINFRAME_FROM_HERE, 234, 20, 1, 2, 3, BeginFrameArgs::MISSED);
   EXPECT_TRUE(args4.IsValid()) << args4;
+  EXPECT_EQ(234u, args4.source_id);
+  EXPECT_EQ(20u, args4.sequence_number);
   EXPECT_EQ(1, args4.frame_time.ToInternalValue());
   EXPECT_EQ(2, args4.deadline.ToInternalValue());
   EXPECT_EQ(3, args4.interval.ToInternalValue());
   EXPECT_EQ(BeginFrameArgs::MISSED, args4.type);
 
   // operator==
-  EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 4, 5, 6),
-            CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 4, 5, 6));
+  EXPECT_EQ(
+      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 20, 4, 5, 6),
+      CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 20, 4, 5, 6));
 
   EXPECT_NONFATAL_FAILURE(
-      EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 7, 8, 9,
-                                               BeginFrameArgs::MISSED),
-                CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 7, 8, 9)),
+      EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 30, 7,
+                                               8, 9, BeginFrameArgs::MISSED),
+                CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 30, 7,
+                                               8, 9)),
       "");
 
   EXPECT_NONFATAL_FAILURE(
-      EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 4, 5, 6),
-                CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 7, 8, 9)),
+      EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 30, 4,
+                                               5, 6),
+                CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 30, 7,
+                                               8, 9)),
+      "");
+
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 30, 7,
+                                               8, 9),
+                CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 40, 7,
+                                               8, 9)),
+      "");
+
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_EQ(CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 123, 30, 7,
+                                               8, 9),
+                CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, 234, 30, 7,
+                                               8, 9)),
       "");
 
   // operator<<
   std::stringstream out1;
   out1 << args1;
-  EXPECT_EQ("BeginFrameArgs(NORMAL, 0, 0, -1us)", out1.str());
+  EXPECT_EQ("BeginFrameArgs(NORMAL, 0, 1, 0, 0, -1us)", out1.str());
   std::stringstream out2;
   out2 << args2;
-  EXPECT_EQ("BeginFrameArgs(NORMAL, 1, 2, 3us)", out2.str());
+  EXPECT_EQ("BeginFrameArgs(NORMAL, 123, 10, 1, 2, 3us)", out2.str());
 
   // PrintTo
-  EXPECT_EQ(std::string("BeginFrameArgs(NORMAL, 0, 0, -1us)"),
+  EXPECT_EQ(std::string("BeginFrameArgs(NORMAL, 0, 1, 0, 0, -1us)"),
             ::testing::PrintToString(args1));
-  EXPECT_EQ(std::string("BeginFrameArgs(NORMAL, 1, 2, 3us)"),
+  EXPECT_EQ(std::string("BeginFrameArgs(NORMAL, 123, 10, 1, 2, 3us)"),
             ::testing::PrintToString(args2));
 }
 
@@ -74,10 +97,12 @@ TEST(BeginFrameArgsTest, Create) {
   EXPECT_TRUE(args1.on_critical_path);
 
   BeginFrameArgs args2 = BeginFrameArgs::Create(
-      BEGINFRAME_FROM_HERE, base::TimeTicks::FromInternalValue(1),
+      BEGINFRAME_FROM_HERE, 123, 10, base::TimeTicks::FromInternalValue(1),
       base::TimeTicks::FromInternalValue(2),
       base::TimeDelta::FromInternalValue(3), BeginFrameArgs::NORMAL);
   EXPECT_TRUE(args2.IsValid()) << args2;
+  EXPECT_EQ(123u, args2.source_id) << args2;
+  EXPECT_EQ(10u, args2.sequence_number) << args2;
   EXPECT_EQ(1, args2.frame_time.ToInternalValue()) << args2;
   EXPECT_EQ(2, args2.deadline.ToInternalValue()) << args2;
   EXPECT_EQ(3, args2.interval.ToInternalValue()) << args2;
@@ -88,7 +113,7 @@ TEST(BeginFrameArgsTest, Create) {
 TEST(BeginFrameArgsTest, Location) {
   tracked_objects::Location expected_location = BEGINFRAME_FROM_HERE;
 
-  BeginFrameArgs args = CreateBeginFrameArgsForTesting(expected_location);
+  BeginFrameArgs args = CreateBeginFrameArgsForTesting(expected_location, 0, 1);
   EXPECT_EQ(expected_location.ToString(), args.created_from.ToString());
 }
 #endif