Bug 1321495 part 2: Add needed "using namespace" declarations to several .cpp files in layout/style, to preemptively fix unified-build bustage. r=TYLin

MozReview-Commit-ID: 5p6DhiZ5YFg

--HG--
extra : rebase_source : 17a90dbe63af0b4e3a7c29881336fc31fbaf726d

layout/style/ServoStyleSheet.cpp

@@ -12,6 +12,8 @@
 
 #include "mozAutoDocUpdate.h"
 
+using namespace mozilla::dom;
+
 namespace mozilla {
 
 ServoStyleSheet::ServoStyleSheet(css::SheetParsingMode aParsingMode,

layout/style/nsCSSScanner.cpp

@@ -14,6 +14,8 @@
 #include "mozilla/Likely.h"
 #include <algorithm>
 
+using namespace mozilla;
+
 /* Character class tables and related helper functions. */
 
 static const uint8_t IS_HEX_DIGIT  = 0x01;

layout/style/nsCSSValue.cpp

@@ -28,6 +28,7 @@
 #include "nsContentUtils.h"
 
 using namespace mozilla;
+using namespace mozilla::css;
 
 static bool
 IsLocalRefURL(nsStringBuffer* aString)

layout/style/nsStyleCoord.cpp

@@ -9,6 +9,8 @@
 #include "mozilla/HashFunctions.h"
 #include "mozilla/PodOperations.h"
 
+using namespace mozilla;
+
 nsStyleCoord::nsStyleCoord(nsStyleUnit aUnit)
   : mUnit(aUnit)
 {

layout/style/nsStyleStruct.cpp

@@ -40,6 +40,7 @@
 #include <algorithm>
 
 using namespace mozilla;
+using namespace mozilla::dom;
 
 static_assert((((1 << nsStyleStructID_Length) - 1) &
                ~(NS_STYLE_INHERIT_MASK)) == 0,