Remove kEnablePrintPreview now that the pdf plugin is part of Chromium.

chrome/common/chrome_switches.h

Index: chrome/common/chrome_switches.h
===================================================================
--- chrome/common/chrome_switches.h	(revision 272869)
+++ chrome/common/chrome_switches.h	(working copy)
@@ -100,6 +100,7 @@
 extern const char kDisablePopupBlocking[];
 extern const char kDisablePreconnect[];
 extern const char kDisablePrerenderLocalPredictor[];
+extern const char kDisablePrintPreview[];
 extern const char kDisablePromptOnRepost[];
 extern const char kDisableQuic[];
 extern const char kDisableQuicHttps[];
@@ -406,12 +407,6 @@
 extern const char kFileManagerExtensionPath[];
 #endif
 
-#if defined(GOOGLE_CHROME_BUILD)
-extern const char kDisablePrintPreview[];
-#else
-extern const char kEnablePrintPreview[];
-#endif
-
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).