Always use ENABLE_PLUGINS to indicate plugins support.

chrome/common/chrome_content_client.cc

Index: chrome/common/chrome_content_client.cc
diff --git a/chrome/common/chrome_content_client.cc b/chrome/common/chrome_content_client.cc
index c577edf5507b7d886645f1b9f874816cd75c6c09..3b9b5f823c3ed361476753c9382c1c78ddeec59f 100644
--- a/chrome/common/chrome_content_client.cc
+++ b/chrome/common/chrome_content_client.cc
@@ -74,12 +74,14 @@
 namespace {
 
 #if defined(ENABLE_PLUGINS)
+#if defined(ENABLE_PDF)
 const char kPDFPluginExtension[] = "pdf";
 const char kPDFPluginDescription[] = "Portable Document Format";
 const char kPDFPluginOutOfProcessMimeType[] =
     "application/x-google-chrome-pdf";
 const uint32 kPDFPluginPermissions = ppapi::PERMISSION_PRIVATE |
                                      ppapi::PERMISSION_DEV;
+#endif  // defined(ENABLE_PDF)
 
 content::PepperPluginInfo::GetInterfaceFunc g_pdf_get_interface;
 content::PepperPluginInfo::PPP_InitializeModuleFunc g_pdf_initialize_module;
@@ -97,6 +99,7 @@ content::PepperPluginInfo::PPP_ShutdownModuleFunc g_nacl_shutdown_module;
 // not marked internal, aside from being automatically registered, they're just
 // regular plugins).
 void ComputeBuiltInPlugins(std::vector<content::PepperPluginInfo>* plugins) {
+#if defined(ENABLE_PDF)
   content::PepperPluginInfo pdf_info;
   pdf_info.is_internal = true;
   pdf_info.is_out_of_process = true;
@@ -114,6 +117,7 @@ void ComputeBuiltInPlugins(std::vector<content::PepperPluginInfo>* plugins) {
   pdf_info.internal_entry_points.shutdown_module = g_pdf_shutdown_module;
   pdf_info.permissions = kPDFPluginPermissions;
   plugins->push_back(pdf_info);
+#endif  // defined(ENABLE_PDF)
 
   base::FilePath path;