remove the useless head files

HarfBuzz is not used in Font.cpp, can remove it

BUG=none
R=thakis@chromium.org

Review-Url: https://codereview.chromium.org/2403633003
Cr-Commit-Position: refs/heads/master@{#424097}

AUTHORS

@@ -760,6 +760,7 @@ Cathie Chen <cathiechen@tencent.com>
 Kyle Plumadore <kyle.plumadore@amd.com>
 Sunchang Li <johnstonli@tencent.com>
 Yeol Park <peary2@gmail.com>
+Debug Wang <debugwang@tencent.com>
 
 BlackBerry Limited <*@blackberry.com>
 Code Aurora Forum <*@codeaurora.org>

third_party/WebKit/Source/platform/fonts/Font.cpp

@@ -35,8 +35,6 @@
 #include "platform/fonts/GlyphPageTreeNode.h"
 #include "platform/fonts/SimpleFontData.h"
 #include "platform/fonts/shaping/CachingWordShaper.h"
-#include "platform/fonts/shaping/HarfBuzzFace.h"
-#include "platform/fonts/shaping/HarfBuzzShaper.h"
 #include "platform/fonts/shaping/SimpleShaper.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/text/BidiResolver.h"