Update all users of base::Version to explicitly specify the namespace, and clean up the header.

components/variations/variations_seed_processor_unittest.cc

Index: components/variations/variations_seed_processor_unittest.cc
diff --git a/components/variations/variations_seed_processor_unittest.cc b/components/variations/variations_seed_processor_unittest.cc
index cbf0864cdd2bbf6931d2a19f8a5c67b444db0078..e03fcd989a7d2915df0012d35a87476b70057989 100644
--- a/components/variations/variations_seed_processor_unittest.cc
+++ b/components/variations/variations_seed_processor_unittest.cc
@@ -399,9 +399,8 @@ TEST_F(VariationsSeedProcessorTest, CheckStudyVersion) {
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(min_test_cases); ++i) {
     filter.set_min_version(min_test_cases[i].min_version);
-    const bool result =
-        seed_processor.CheckStudyVersion(filter,
-                                         Version(min_test_cases[i].version));
+    const bool result = seed_processor.CheckStudyVersion(
+        filter, base::Version(min_test_cases[i].version));
     EXPECT_EQ(min_test_cases[i].expected_result, result) <<
         "Min. version case " << i << " failed!";
   }
@@ -409,9 +408,8 @@ TEST_F(VariationsSeedProcessorTest, CheckStudyVersion) {
 
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(max_test_cases); ++i) {
     filter.set_max_version(max_test_cases[i].max_version);
-    const bool result =
-        seed_processor.CheckStudyVersion(filter,
-                                         Version(max_test_cases[i].version));
+    const bool result = seed_processor.CheckStudyVersion(
+        filter, base::Version(max_test_cases[i].version));
     EXPECT_EQ(max_test_cases[i].expected_result, result) <<
         "Max version case " << i << " failed!";
   }
@@ -423,16 +421,14 @@ TEST_F(VariationsSeedProcessorTest, CheckStudyVersion) {
       filter.set_max_version(max_test_cases[j].max_version);
 
       if (!min_test_cases[i].expected_result) {
-        const bool result =
-            seed_processor.CheckStudyVersion(
-                filter, Version(min_test_cases[i].version));
+        const bool result = seed_processor.CheckStudyVersion(
+            filter, base::Version(min_test_cases[i].version));
         EXPECT_FALSE(result) << "Case " << i << "," << j << " failed!";
       }
 
       if (!max_test_cases[j].expected_result) {
-        const bool result =
-            seed_processor.CheckStudyVersion(
-                filter, Version(max_test_cases[j].version));
+        const bool result = seed_processor.CheckStudyVersion(
+            filter, base::Version(max_test_cases[j].version));
         EXPECT_FALSE(result) << "Case " << i << "," << j << " failed!";
       }
     }