Replace ToLower calls to the new format

Replaces
  base::StringToLowerASCII(string)
with
  base::ToLowerASCII(string)
This form is 1:1 search and replace.

A bunch of places did something like this:
  std::string foo(something_else);
  base::StringToLowerASCII(&foo);
which became:
  foo = base::ToLowerASCII(something_else);

A couple places really wanted in-place changing and they became:
  foo = base::ToLowerASCII(foo);

There was pretty trivial cleanup in chrome_main_delegate.cc chrome/test/chromedriver/server/http_handler.cc (fix indenting).

There was more cleanup in:
chrome/installer/util/language_selector.cc and components/plugins/renderer/mobile_youtube_plugin.cc

In components/history/core/browser/url_utils.cc I removed the call since it was calling ToLower on the host name out of a GURL, which is already guaranteed to be lower-case.

NOPRESUBMIT=true
(due to touching code with wstrings)

Review URL: https://codereview.chromium.org/1279123004

Cr-Commit-Position: refs/heads/master@{#342659}

1 files changed, 3 insertions, 3 deletions

diff --git a/base/command_line.cc b/base/command_line.cc
index 95ff644..c2ce33d 100644
--- a/base/command_line.cc
+++ b/base/command_line.cc
@@ -267,7 +267,7 @@ void CommandLine::SetProgram(const FilePath& program) {
 }
 
 bool CommandLine::HasSwitch(const base::StringPiece& switch_string) const {
-  DCHECK_EQ(StringToLowerASCII(switch_string.as_string()), switch_string);
+  DCHECK_EQ(ToLowerASCII(switch_string), switch_string);
   return switches_by_stringpiece_.find(switch_string) !=
          switches_by_stringpiece_.end();
 }
@@ -297,7 +297,7 @@ FilePath CommandLine::GetSwitchValuePath(
 
 CommandLine::StringType CommandLine::GetSwitchValueNative(
     const base::StringPiece& switch_string) const {
-  DCHECK_EQ(StringToLowerASCII(switch_string.as_string()), switch_string);
+  DCHECK_EQ(ToLowerASCII(switch_string), switch_string);
   auto result = switches_by_stringpiece_.find(switch_string);
   return result == switches_by_stringpiece_.end() ? StringType()
                                                   : *(result->second);
@@ -315,7 +315,7 @@ void CommandLine::AppendSwitchPath(const std::string& switch_string,
 void CommandLine::AppendSwitchNative(const std::string& switch_string,
                                      const CommandLine::StringType& value) {
 #if defined(OS_WIN)
-  const std::string switch_key = StringToLowerASCII(switch_string);
+  const std::string switch_key = ToLowerASCII(switch_string);
   StringType combined_switch_string(ASCIIToUTF16(switch_key));
 #elif defined(OS_POSIX)
   const std::string& switch_key = switch_string;