Fully qualify googletest symbols.

Semi-automatically created with:

git grep -l " testing::" | xargs sed -i "s/ testing::/ ::testing::/g"
git grep -l "(testing::" | xargs sed -i "s/(testing::/(::testing::/g"
git cl format

After this, two .cc files failed to compile and I have fixed them
manually.

Bug: webrtc:10523
Change-Id: I4741d3bcedc831b6c5fdc04485678617eb4ce031
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132018
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27526}
diff --git a/modules/audio_coding/audio_network_adaptor/event_log_writer_unittest.cc b/modules/audio_coding/audio_network_adaptor/event_log_writer_unittest.cc
index b1e3313..5d5e5df 100644
--- a/modules/audio_coding/audio_network_adaptor/event_log_writer_unittest.cc
+++ b/modules/audio_coding/audio_network_adaptor/event_log_writer_unittest.cc
@@ -48,7 +48,7 @@
 
 EventLogWriterStates CreateEventLogWriter() {
   EventLogWriterStates state;
-  state.event_log.reset(new testing::StrictMock<MockRtcEventLog>());
+  state.event_log.reset(new ::testing::StrictMock<MockRtcEventLog>());
   state.event_log_writer.reset(new EventLogWriter(
       state.event_log.get(), kMinBitrateChangeBps, kMinBitrateChangeFraction,
       kMinPacketLossChangeFraction));
diff --git a/modules/audio_coding/codecs/isac/fix/source/filterbanks_unittest.cc b/modules/audio_coding/codecs/isac/fix/source/filterbanks_unittest.cc
index b7456a7..4a3db23 100644
--- a/modules/audio_coding/codecs/isac/fix/source/filterbanks_unittest.cc
+++ b/modules/audio_coding/codecs/isac/fix/source/filterbanks_unittest.cc
@@ -16,7 +16,7 @@
 #include "system_wrappers/include/cpu_features_wrapper.h"
 #include "test/gtest.h"
 
-class FilterBanksTest : public testing::Test {
+class FilterBanksTest : public ::testing::Test {
  protected:
   // Pass a function pointer to the Tester function.
   void RTC_NO_SANITIZE("signed-integer-overflow")  // bugs.webrtc.org/5513
diff --git a/modules/audio_coding/codecs/isac/fix/source/filters_unittest.cc b/modules/audio_coding/codecs/isac/fix/source/filters_unittest.cc
index 471fa57..192ef89 100644
--- a/modules/audio_coding/codecs/isac/fix/source/filters_unittest.cc
+++ b/modules/audio_coding/codecs/isac/fix/source/filters_unittest.cc
@@ -12,7 +12,7 @@
 #include "system_wrappers/include/cpu_features_wrapper.h"
 #include "test/gtest.h"
 
-class FiltersTest : public testing::Test {
+class FiltersTest : public ::testing::Test {
  protected:
   // Pass a function pointer to the Tester function.
   void FiltersTester(AutocorrFix WebRtcIsacfix_AutocorrFixFunction) {
diff --git a/modules/audio_coding/codecs/isac/fix/source/lpc_masking_model_unittest.cc b/modules/audio_coding/codecs/isac/fix/source/lpc_masking_model_unittest.cc
index fab0a04..554ec0c 100644
--- a/modules/audio_coding/codecs/isac/fix/source/lpc_masking_model_unittest.cc
+++ b/modules/audio_coding/codecs/isac/fix/source/lpc_masking_model_unittest.cc
@@ -12,7 +12,7 @@
 #include "system_wrappers/include/cpu_features_wrapper.h"
 #include "test/gtest.h"
 
-class LpcMaskingModelTest : public testing::Test {
+class LpcMaskingModelTest : public ::testing::Test {
  protected:
   // Pass a function pointer to the Tester function.
   void CalculateResidualEnergyTester(
diff --git a/modules/audio_coding/codecs/isac/fix/source/transform_unittest.cc b/modules/audio_coding/codecs/isac/fix/source/transform_unittest.cc
index a058530..473b7f8 100644
--- a/modules/audio_coding/codecs/isac/fix/source/transform_unittest.cc
+++ b/modules/audio_coding/codecs/isac/fix/source/transform_unittest.cc
@@ -136,7 +136,7 @@
     294,   -339,   344,    -396,  407,   -429,  438,   -439,  485,   -556,
     629,   -612,   637,    -645,  661,   -737,  829,   -830,  831,   -1041};
 
-class TransformTest : public testing::Test {
+class TransformTest : public ::testing::Test {
  protected:
   TransformTest() { WebRtcSpl_Init(); }
 
diff --git a/modules/audio_coding/codecs/isac/unittest.cc b/modules/audio_coding/codecs/isac/unittest.cc
index 076510b..b9eff32 100644
--- a/modules/audio_coding/codecs/isac/unittest.cc
+++ b/modules/audio_coding/codecs/isac/unittest.cc
@@ -210,7 +210,7 @@
   }
 };
 
-class IsacCommonTest : public testing::TestWithParam<IsacTestParam> {};
+class IsacCommonTest : public ::testing::TestWithParam<IsacTestParam> {};
 
 }  // namespace
 
@@ -252,6 +252,6 @@
   return cases;
 }
 
-INSTANTIATE_TEST_SUITE_P(, IsacCommonTest, testing::ValuesIn(TestCases()));
+INSTANTIATE_TEST_SUITE_P(, IsacCommonTest, ::testing::ValuesIn(TestCases()));
 
 }  // namespace webrtc
diff --git a/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc b/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc
index 23b9506..66eecb7 100644
--- a/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc
+++ b/modules/audio_coding/codecs/opus/audio_decoder_multi_channel_opus_unittest.cc
@@ -94,7 +94,7 @@
   EXPECT_TRUE(decoder_config->IsOk());
   EXPECT_EQ(decoder_config->coupled_streams, 2);
   EXPECT_THAT(decoder_config->channel_mapping,
-              testing::ContainerEq(std::vector<unsigned char>({3, 1, 2, 0})));
+              ::testing::ContainerEq(std::vector<unsigned char>({3, 1, 2, 0})));
 }
 
 TEST(AudioDecoderMultiOpusTest, InvalidSdpToConfigDoesNotProduceConfig) {
diff --git a/modules/audio_coding/codecs/tools/audio_codec_speed_test.h b/modules/audio_coding/codecs/tools/audio_codec_speed_test.h
index c626bfa..59c2f16 100644
--- a/modules/audio_coding/codecs/tools/audio_codec_speed_test.h
+++ b/modules/audio_coding/codecs/tools/audio_codec_speed_test.h
@@ -22,7 +22,7 @@
 // <channels, bit_rate, file_name, extension, if_save_output>.
 typedef std::tuple<size_t, int, std::string, std::string, bool> coding_param;
 
-class AudioCodecSpeedTest : public testing::TestWithParam<coding_param> {
+class AudioCodecSpeedTest : public ::testing::TestWithParam<coding_param> {
  protected:
   AudioCodecSpeedTest(int block_duration_ms,
                       int input_sampling_khz,
diff --git a/modules/audio_coding/neteq/decoder_database_unittest.cc b/modules/audio_coding/neteq/decoder_database_unittest.cc
index 9a28cac..c1b92b5 100644
--- a/modules/audio_coding/neteq/decoder_database_unittest.cc
+++ b/modules/audio_coding/neteq/decoder_database_unittest.cc
@@ -21,8 +21,8 @@
 #include "test/mock_audio_decoder.h"
 #include "test/mock_audio_decoder_factory.h"
 
-using testing::_;
-using testing::Invoke;
+using ::testing::_;
+using ::testing::Invoke;
 
 namespace webrtc {
 
diff --git a/modules/audio_coding/neteq/test/neteq_ilbc_quality_test.cc b/modules/audio_coding/neteq/test/neteq_ilbc_quality_test.cc
index 09b3728..5d2df77 100644
--- a/modules/audio_coding/neteq/test/neteq_ilbc_quality_test.cc
+++ b/modules/audio_coding/neteq/test/neteq_ilbc_quality_test.cc
@@ -17,7 +17,7 @@
 #include "rtc_base/numerics/safe_conversions.h"
 #include "test/testsupport/file_utils.h"
 
-using testing::InitGoogleTest;
+using ::testing::InitGoogleTest;
 
 namespace webrtc {
 namespace test {
diff --git a/modules/audio_coding/neteq/test/neteq_isac_quality_test.cc b/modules/audio_coding/neteq/test/neteq_isac_quality_test.cc
index 92e0680..94a5a86 100644
--- a/modules/audio_coding/neteq/test/neteq_isac_quality_test.cc
+++ b/modules/audio_coding/neteq/test/neteq_isac_quality_test.cc
@@ -12,7 +12,7 @@
 #include "modules/audio_coding/neteq/tools/neteq_quality_test.h"
 #include "rtc_base/flags.h"
 
-using testing::InitGoogleTest;
+using ::testing::InitGoogleTest;
 
 namespace webrtc {
 namespace test {
diff --git a/modules/audio_coding/neteq/test/neteq_opus_quality_test.cc b/modules/audio_coding/neteq/test/neteq_opus_quality_test.cc
index 35e24c2..e56c817 100644
--- a/modules/audio_coding/neteq/test/neteq_opus_quality_test.cc
+++ b/modules/audio_coding/neteq/test/neteq_opus_quality_test.cc
@@ -13,7 +13,7 @@
 #include "modules/audio_coding/neteq/tools/neteq_quality_test.h"
 #include "rtc_base/flags.h"
 
-using testing::InitGoogleTest;
+using ::testing::InitGoogleTest;
 
 namespace webrtc {
 namespace test {
diff --git a/modules/audio_coding/neteq/test/neteq_pcm16b_quality_test.cc b/modules/audio_coding/neteq/test/neteq_pcm16b_quality_test.cc
index 3557b11..a43c26a 100644
--- a/modules/audio_coding/neteq/test/neteq_pcm16b_quality_test.cc
+++ b/modules/audio_coding/neteq/test/neteq_pcm16b_quality_test.cc
@@ -18,7 +18,7 @@
 #include "rtc_base/numerics/safe_conversions.h"
 #include "test/testsupport/file_utils.h"
 
-using testing::InitGoogleTest;
+using ::testing::InitGoogleTest;
 
 namespace webrtc {
 namespace test {
diff --git a/modules/audio_coding/neteq/test/neteq_pcmu_quality_test.cc b/modules/audio_coding/neteq/test/neteq_pcmu_quality_test.cc
index ce399a4..62a184e 100644
--- a/modules/audio_coding/neteq/test/neteq_pcmu_quality_test.cc
+++ b/modules/audio_coding/neteq/test/neteq_pcmu_quality_test.cc
@@ -17,7 +17,7 @@
 #include "rtc_base/numerics/safe_conversions.h"
 #include "test/testsupport/file_utils.h"
 
-using testing::InitGoogleTest;
+using ::testing::InitGoogleTest;
 
 namespace webrtc {
 namespace test {