Remove unnecessary includes from LayoutBlockFlowLine.cpp

BUG=none
R=chrishtr@chromium.org, wangxianzhu@chromium.org

Review-Url: https://codereview.chromium.org/2449183006
Cr-Commit-Position: refs/heads/master@{#430220}

AUTHORS

@@ -775,6 +775,7 @@ Kyle Plumadore <kyle.plumadore@amd.com>
 Sunchang Li <johnstonli@tencent.com>
 Yeol Park <peary2@gmail.com>
 Debug Wang <debugwang@tencent.com>
+Zeqin Chen <talonchen@tencent.com>
 
 BlackBerry Limited <*@blackberry.com>
 Code Aurora Forum <*@codeaurora.org>

third_party/WebKit/Source/core/layout/LayoutBlockFlowLine.cpp

@@ -39,14 +39,10 @@
 #include "core/layout/svg/line/SVGRootInlineBox.h"
 #include "platform/text/BidiResolver.h"
 #include "platform/text/Character.h"
-#include "wtf/StdLibExtras.h"
 #include "wtf/Vector.h"
-#include "wtf/text/CharacterNames.h"
 
 namespace blink {
 
-using namespace WTF::Unicode;
-
 class ExpansionOpportunities {
  public:
   ExpansionOpportunities() : m_totalOpportunities(0) {}