Make callers of CommandLine use it via the base:: namespace.

Covers chrome/app* and chrome/browser/* through e.

BUG=422426
TEST=none
[email protected]

Review URL: https://codereview.chromium.org/819133004

Cr-Commit-Position: refs/heads/master@{#309476}
diff --git a/chrome/browser/chrome_content_browser_client_unittest.cc b/chrome/browser/chrome_content_browser_client_unittest.cc
index 9d9dbeb..32ed674 100644
--- a/chrome/browser/chrome_content_browser_client_unittest.cc
+++ b/chrome/browser/chrome_content_browser_client_unittest.cc
@@ -36,8 +36,8 @@
 class DisableWebRtcEncryptionFlagTest : public testing::Test {
  public:
   DisableWebRtcEncryptionFlagTest()
-      : from_command_line_(CommandLine::NO_PROGRAM),
-        to_command_line_(CommandLine::NO_PROGRAM) {}
+      : from_command_line_(base::CommandLine::NO_PROGRAM),
+        to_command_line_(base::CommandLine::NO_PROGRAM) {}
 
  protected:
   void SetUp() override {
@@ -51,8 +51,8 @@
         channel);
   }
 
-  CommandLine from_command_line_;
-  CommandLine to_command_line_;
+  base::CommandLine from_command_line_;
+  base::CommandLine to_command_line_;
 
   DISALLOW_COPY_AND_ASSIGN(DisableWebRtcEncryptionFlagTest);
 };