Revert of Update SplitString calls to new form (patchset #5 id:80001 of https://codereview.chromium.org/1272823003/ )

Reason for revert:
Caused Blink layout test failures in media/encrypted-media/encrypted-media-requestmediakeysystemaccess.html :

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=media%2Fencrypted-media%2Fencrypted-media-requestmediakeysystemaccess.html

Original issue's description:
> Update SplitString calls to new form
>
> Uses the new form for most (but not quite all) of the remaining users of the old form.
>
> Changes media mime util codec list parsing to expect no result from the string "," rather than two empty strings. The old SplitString call had a special case where if the input was empty, it would return empty, but if it had one split character, it would return two empty strings as results.
>
> The new one lets you choose but the options are either (1) empty string -> one empty string and "," -> two empty strings, or (2) map both to no results for when you don't want empty results. I'm pretty sure media codec parsing actually wants the latter behavior, so I updated the call to discard empty results and MimeUtilTest.ParseCodecString is updated.
>
> Committed: https://crrev.com/0aa7c64253cca8b636d52d1d01d94f96ab9c13fa
> Cr-Commit-Position: refs/heads/master@{#342238}

TBR=sky@chromium.org,dalecurtis@chromium.org,brettw@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1278973003

Cr-Commit-Position: refs/heads/master@{#342257}

1 files changed, 4 insertions, 3 deletions

diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 29f4d4f..eca03fa 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -600,9 +600,10 @@ void ApplyBlinkSettings(const base::CommandLine& command_line,
   if (!command_line.HasSwitch(switches::kBlinkSettings))
     return;
 
-  std::vector<std::string> blink_settings = base::SplitString(
-      command_line.GetSwitchValueASCII(switches::kBlinkSettings),
-      ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
+  std::vector<std::string> blink_settings;
+  base::SplitString(
+      command_line.GetSwitchValueASCII(switches::kBlinkSettings), ',',
+      &blink_settings);
   for (const std::string& setting : blink_settings) {
     size_t pos = setting.find('=');
     settings->setFromStrings(