[base] Apply BindOnceRewriter in //base

This change applies the BindOnceRewriter in //base.
This rewriter replaces calls to base::Bind and base::BindRepeating with
calls to base::BindOnce, in case the result is immediately assigned to a
base::OnceCallback. Given that base::RepeatingCallback is implicitly
convertible to base::OnceCallback, there is no change in functionality.

Steps:
  1. run_tool.py --tool base_bind_rewriters \
                 --tool-arg='--rewriter=bind_to_bind_once'
  2. git cl format

This CL was uploaded by git cl split.

R=brucedawson@chromium.org

Bug: 714018
Change-Id: I9b35e5f70260a892ed38255edd632699c293235b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2132388Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755487}

base/win/registry_unittest.cc

@@ -371,7 +371,7 @@ TEST_F(RegistryTest, ChangeCallback) {
             key.Create(HKEY_CURRENT_USER, foo_key.c_str(), KEY_READ));
 
   ASSERT_TRUE(key.StartWatching(
-      BindRepeating(&TestChangeDelegate::OnKeyChanged, Unretained(&delegate))));
+      BindOnce(&TestChangeDelegate::OnKeyChanged, Unretained(&delegate))));
   EXPECT_FALSE(delegate.WasCalled());
 
   // Make some change.
@@ -389,7 +389,7 @@ TEST_F(RegistryTest, ChangeCallback) {
   EXPECT_FALSE(delegate.WasCalled());
 
   ASSERT_TRUE(key.StartWatching(
-      BindRepeating(&TestChangeDelegate::OnKeyChanged, Unretained(&delegate))));
+      BindOnce(&TestChangeDelegate::OnKeyChanged, Unretained(&delegate))));
 
   // Change something else.
   EXPECT_EQ(ERROR_SUCCESS, key2.WriteValue(L"name2", L"data2"));
@@ -397,7 +397,7 @@ TEST_F(RegistryTest, ChangeCallback) {
   ASSERT_TRUE(delegate.WasCalled());
 
   ASSERT_TRUE(key.StartWatching(
-      BindRepeating(&TestChangeDelegate::OnKeyChanged, Unretained(&delegate))));
+      BindOnce(&TestChangeDelegate::OnKeyChanged, Unretained(&delegate))));
   RunLoop().RunUntilIdle();
   EXPECT_FALSE(delegate.WasCalled());
 }