[DWARF] NFC: DWARFDataExtractor combines relocs with DataExtractor.

Requires callers to directly associate relocations with a DataExtractor
used to read data from a DWARF section, which helps a callee not make
assumptions about which section it is reading.
This is the next step in reducing DWARFFormValue's dependence on DWARFUnit.

Differential Revision: https://reviews.llvm.org/D34704

llvm-svn: 306699
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp
index 1551974..976bc46 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugInfoEntry.cpp
@@ -21,13 +21,13 @@
 
 bool DWARFDebugInfoEntry::extractFast(const DWARFUnit &U,
                                              uint32_t *OffsetPtr) {
-  DataExtractor DebugInfoData = U.getDebugInfoExtractor();
+  DWARFDataExtractor DebugInfoData = U.getDebugInfoExtractor();
   const uint32_t UEndOffset = U.getNextUnitOffset();
   return extractFast(U, OffsetPtr, DebugInfoData, UEndOffset, 0);
 }
 
 bool DWARFDebugInfoEntry::extractFast(const DWARFUnit &U, uint32_t *OffsetPtr,
-                                      const DataExtractor &DebugInfoData,
+                                      const DWARFDataExtractor &DebugInfoData,
                                       uint32_t UEndOffset, uint32_t D) {
   Offset = *OffsetPtr;
   Depth = D;