Banish DisplayID from the SurfaceFlinger API.

Use only display tokens in the API to refer to new displays.

Don't require the caller to specify the display when creating
a surface (since in general a surface could be shown on
any display).

This is intended to be a minimum change just to update the API.
Note that SurfaceFlinger still uses DisplayID in a few places
internally that might cause some features not to work properly
when there are multiple displays (LayerScreenshot, for example).

Change-Id: I3d91eec2da406eefd97bcd53655d403ad865a7e6
diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index e3a98ff..0592c5b 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -57,7 +57,8 @@
         uint32_t w=0, h=0;
         PixelFormat fmt=0;
         sp<ISurfaceComposer> sf(ComposerService::getComposerService());
-        ASSERT_EQ(NO_ERROR, sf->captureScreen(0, &heap, &w, &h, &fmt, 0, 0,
+        sp<IBinder> display(sf->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+        ASSERT_EQ(NO_ERROR, sf->captureScreen(display, &heap, &w, &h, &fmt, 0, 0,
                 0, INT_MAX));
         ASSERT_TRUE(heap != NULL);
         ASSERT_EQ(PIXEL_FORMAT_RGBA_8888, fmt);
@@ -93,15 +94,17 @@
         mComposerClient = new SurfaceComposerClient;
         ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
 
+        sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(
+                ISurfaceComposer::eDisplayIdMain));
         DisplayInfo info;
-        SurfaceComposerClient::getDisplayInfo(0, &info);
+        SurfaceComposerClient::getDisplayInfo(display, &info);
 
         ssize_t displayWidth = info.w;
         ssize_t displayHeight = info.h;
 
         // Background surface
         mBGSurfaceControl = mComposerClient->createSurface(
-                String8("BG Test Surface"), 0, displayWidth, displayHeight,
+                String8("BG Test Surface"), displayWidth, displayHeight,
                 PIXEL_FORMAT_RGBA_8888, 0);
         ASSERT_TRUE(mBGSurfaceControl != NULL);
         ASSERT_TRUE(mBGSurfaceControl->isValid());
@@ -109,7 +112,7 @@
 
         // Foreground surface
         mFGSurfaceControl = mComposerClient->createSurface(
-                String8("FG Test Surface"), 0, 64, 64, PIXEL_FORMAT_RGBA_8888, 0);
+                String8("FG Test Surface"), 64, 64, PIXEL_FORMAT_RGBA_8888, 0);
         ASSERT_TRUE(mFGSurfaceControl != NULL);
         ASSERT_TRUE(mFGSurfaceControl->isValid());
 
@@ -117,7 +120,7 @@
 
         // Synchronization surface
         mSyncSurfaceControl = mComposerClient->createSurface(
-                String8("Sync Test Surface"), 0, 1, 1, PIXEL_FORMAT_RGBA_8888, 0);
+                String8("Sync Test Surface"), 1, 1, PIXEL_FORMAT_RGBA_8888, 0);
         ASSERT_TRUE(mSyncSurfaceControl != NULL);
         ASSERT_TRUE(mSyncSurfaceControl->isValid());