Refactor libplatform unit tests to use GTest/GMock.

src/libplatform/libplatform.gyp

Index: src/libplatform/libplatform.gyp
diff --git a/src/base/base.gyp b/src/libplatform/libplatform.gyp
similarity index 61%
copy from src/base/base.gyp
copy to src/libplatform/libplatform.gyp
index 6b1b8f2ab4e11e1299d328cb5dd2157984da62c3..4321da723a8790dd292d7de2af118089921ac36c 100644
--- a/src/base/base.gyp
+++ b/src/libplatform/libplatform.gyp
@@ -9,27 +9,21 @@
   'includes': ['../../build/toolchain.gypi', '../../build/features.gypi'],
   'targets': [
     {
-      'target_name': 'base-unittests',
+      'target_name': 'libplatform-unittests',
       'type': 'executable',
       'dependencies': [
         '../../testing/gtest.gyp:gtest',
-        '../../testing/gtest.gyp:gtest_main',
-        '../../tools/gyp/v8.gyp:v8_libbase',
+        '../../testing/gmock.gyp:gmock',
+        '../../testing/gmock.gyp:gmock_main',
+        '../../tools/gyp/v8.gyp:v8_libplatform',
       ],
       'include_dirs': [
         '../..',
       ],
       'sources': [  ### gcmole(all) ###
-        'bits-unittest.cc',
-        'cpu-unittest.cc',
-        'flags-unittest.cc',
-        'platform/condition-variable-unittest.cc',
-        'platform/mutex-unittest.cc',
-        'platform/platform-unittest.cc',
-        'platform/semaphore-unittest.cc',
-        'platform/time-unittest.cc',
-        'sys-info-unittest.cc',
-        'utils/random-number-generator-unittest.cc',
+        'default-platform-unittest.cc',
+        'task-queue-unittest.cc',
+        'worker-thread-unittest.cc',
       ],
       'conditions': [
         ['os_posix == 1', {