Update googletest version for standalone build

The new version of googletest brings some benefits: for example it
detects when a TEST_P doesn't have a corresponding
INSTANTIATE_TEST_SUITE_P, which is usually an error. Otherwise, the
problem will only be detected later in the chromium/android builds.

The new version is the latest version of the github sources that Android
has merged. It is older than the one chromium is currently using.

Change-Id: I23f8ce9e7e4177026c500977db7b881ed5fbc4b4
diff --git a/tools/install-build-deps b/tools/install-build-deps
index 34dfe41..fc1cc0b 100755
--- a/tools/install-build-deps
+++ b/tools/install-build-deps
@@ -137,11 +137,11 @@
 ]
 
 BUILD_DEPS_HOST = [
-    # Keep in sync with Android's //external/googletest/README.version.
+    # Keep in sync with Android's //external/googletest/METADATA.
     Dependency(
         'buildtools/googletest',
         'https://android.googlesource.com/platform/external/googletest.git',
-        '3f05f651ae3621db58468153e32016bc1397800b', 'all', 'all'),
+        '609281088cfefc76f9d0ce82e1ff6c30cc3591e5', 'all', 'all'),
 
     # Keep in sync with Chromium's //third_party/protobuf.
     Dependency(