[Android] Switch instrumentation test names to their respective target names.

testing/buildbot/chromium.fyi.json

 {
   "Android Cloud Tests": {
     "gtest_tests": [
       {
         "test": "android_webview_unittests"
       },
       {
         "test": "base_unittests"
       },
       {
@@ skipping 61 matching lines @@
       },
       {
         "test": "ui_touch_selection_unittests"
       },
       {
         "test": "unit_tests"
       }
     ],
     "instrumentation_tests": [
       {
-        "test": "AndroidWebViewTest"
+        "test": "android_webview_test_apk"
       },
       {
-        "test": "ChromePublicTest"
+        "test": "chrome_public_test_apk"
       },
       {
-        "test": "ChromeSyncShellTest"
+        "test": "chrome_sync_shell_test_apk"
       },
       {
-        "test": "ContentShellTest"
+        "test": "content_shell_test_apk"
       }
     ]
   },
   "Android Tests (trial)(dbg)": {
     "gtest_tests": [
       {
         "args": [
           "--isolate_file_path=src/third_party/WebKit/Source/platform/heap/BlinkHeapUnitTests.isolate"
         ],
         "test": "blink_heap_unittests"
@@ skipping 7595 matching lines @@
       },
       {
         "args": [
           "--isolate-extensions"
         ],
         "test": "unit_tests"
       }
     ]
   }
 }