Add plumbing for upcoming setFrameRate() api

Add plumbing from the app to surface flinger for the
ANativeWindow_setFrameRate() and ASurfaceTransaction_setFrameRate() api
calls we'll be adding soon.

We don't do anything in surface flinger with this data yet.

Bug: 143912624

Test: Added a new test, SetFrameRateTest.
Change-Id: I1cab87f3ce5afca4591a39d8e7a42cb1e86a368f
diff --git a/libs/gui/IGraphicBufferConsumer.cpp b/libs/gui/IGraphicBufferConsumer.cpp
index c705d39..2521a7c 100644
--- a/libs/gui/IGraphicBufferConsumer.cpp
+++ b/libs/gui/IGraphicBufferConsumer.cpp
@@ -51,6 +51,8 @@
     GET_SIDEBAND_STREAM,
     GET_OCCUPANCY_HISTORY,
     DISCARD_FREE_BUFFERS,
+    SET_FRAME_RATE,
+    GET_FRAME_RATE,
     DUMP_STATE,
     LAST = DUMP_STATE,
 };
@@ -163,6 +165,16 @@
                 Tag::DISCARD_FREE_BUFFERS);
     }
 
+    status_t setFrameRate(float frameRate) override {
+        using Signature = decltype(&IGraphicBufferConsumer::setFrameRate);
+        return callRemote<Signature>(Tag::SET_FRAME_RATE, frameRate);
+    }
+
+    status_t getFrameRate(float* frameRate) const override {
+        using Signature = decltype(&IGraphicBufferConsumer::getFrameRate);
+        return callRemote<Signature>(Tag::GET_FRAME_RATE, frameRate);
+    }
+
     status_t dumpState(const String8& prefix, String8* outResult) const override {
         using Signature = status_t (IGraphicBufferConsumer::*)(const String8&, String8*) const;
         return callRemote<Signature>(Tag::DUMP_STATE, prefix, outResult);
@@ -220,6 +232,10 @@
             return callLocal(data, reply, &IGraphicBufferConsumer::getOccupancyHistory);
         case Tag::DISCARD_FREE_BUFFERS:
             return callLocal(data, reply, &IGraphicBufferConsumer::discardFreeBuffers);
+        case Tag::SET_FRAME_RATE:
+            return callLocal(data, reply, &IGraphicBufferConsumer::setFrameRate);
+        case Tag::GET_FRAME_RATE:
+            return callLocal(data, reply, &IGraphicBufferConsumer::getFrameRate);
         case Tag::DUMP_STATE: {
             using Signature = status_t (IGraphicBufferConsumer::*)(const String8&, String8*) const;
             return callLocal<Signature>(data, reply, &IGraphicBufferConsumer::dumpState);