Fix GN label names for blink_heap_unittests, blink_platform_unittests.

BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 167 matching lines @@
       "//mojo/application/public/cpp",
       "//mojo/common:mojo_common_unittests",
       "//net:net_perftests",
 
       # TODO(use-new-edk):
       #"//mojo/edk/system:mojo_system_unittests",
       #"//mojo/edk/test:mojo_public_bindings_unittests",
       #"//mojo/edk/test:mojo_public_environment_unittests",
       #"//mojo/edk/test:mojo_public_system_unittests",
       #"//mojo/edk/test:mojo_public_utility_unittests",
-      "//third_party/WebKit/Source/platform:heap_unittests",
-      "//third_party/WebKit/Source/platform:platform_unittests",
+      "//third_party/WebKit/Source/platform:blink_heap_unittests",
+      "//third_party/WebKit/Source/platform:blink_platform_unittests",
       "//third_party/WebKit/Source/web:webkit_unit_tests",
       "//third_party/WebKit/Source/wtf:wtf_unittests",
       "//third_party/mojo/src/mojo/edk/system:mojo_system_unittests",
       "//third_party/mojo/src/mojo/edk/test:mojo_public_bindings_unittests",
       "//third_party/mojo/src/mojo/edk/test:mojo_public_environment_unittests",
       "//third_party/mojo/src/mojo/edk/test:mojo_public_system_unittests",
       "//third_party/mojo/src/mojo/edk/test:mojo_public_utility_unittests",
       "//third_party/smhasher:pmurhash",
       "//tools/battor_agent",
       "//tools/imagediff($host_toolchain)",
@@ skipping 658 matching lines @@
       ]
 
       if (target_cpu == "x86") {
         deps += [ "//chrome/tools/crash_service:crash_service_win64" ]
       }
     } else {
       deps += [ "//breakpad:minidump_stackwalk($host_toolchain)" ]
     }
   }
 }