Removing "using" declarations that import names in the C++ Standard library.

Source/core/editing/CompositeEditCommand.cpp

Index: Source/core/editing/CompositeEditCommand.cpp
diff --git a/Source/core/editing/CompositeEditCommand.cpp b/Source/core/editing/CompositeEditCommand.cpp
index f450f39a50e55eebb6626fb0c77c8c62a4e63225..728e5290286e92b6745310f101c9ecc69868a61e 100644
--- a/Source/core/editing/CompositeEditCommand.cpp
+++ b/Source/core/editing/CompositeEditCommand.cpp
@@ -69,8 +69,6 @@
 #include "core/rendering/RenderListItem.h"
 #include "core/rendering/RenderText.h"
 
-using namespace std;
-
 namespace WebCore {
 
 using namespace HTMLNames;
@@ -109,8 +107,8 @@ void EditCommandComposition::unapply()
     m_document->updateLayoutIgnorePendingStylesheets();
 
     {
-        size_t size = m_commands.size();
-        for (size_t i = size; i; --i)
+        std::size_t size = m_commands.size();
+        for (std::size_t i = size; i; --i)
             m_commands[i - 1]->doUnapply();
     }
 
@@ -129,8 +127,8 @@ void EditCommandComposition::reapply()
     m_document->updateLayoutIgnorePendingStylesheets();
 
     {
-        size_t size = m_commands.size();
-        for (size_t i = 0; i != size; ++i)
+        std::size_t size = m_commands.size();
+        for (std::size_t i = 0; i != size; ++i)
             m_commands[i]->doReapply();
     }
 
@@ -368,8 +366,8 @@ void CompositeEditCommand::removeChildrenInRange(PassRefPtrWillBeRawPtr<Node> no
     for (unsigned i = from; child && i < to; i++, child = child->nextSibling())
         children.append(child);
 
-    size_t size = children.size();
-    for (size_t i = 0; i < size; ++i)
+    std::size_t size = children.size();
+    for (std::size_t i = 0; i < size; ++i)
         removeNode(children[i].release());
 }
 
@@ -501,9 +499,9 @@ Position CompositeEditCommand::replaceSelectedTextInNode(const String& text)
 
 static void copyMarkers(const WillBeHeapVector<DocumentMarker*>& markerPointers, Vector<DocumentMarker>& markers)
 {
-    size_t arraySize = markerPointers.size();
+    std::size_t arraySize = markerPointers.size();
     markers.reserveCapacity(arraySize);
-    for (size_t i = 0; i < arraySize; ++i)
+    for (std::size_t i = 0; i < arraySize; ++i)
         markers.append(*markerPointers[i]);
 }
 
@@ -515,7 +513,7 @@ void CompositeEditCommand::replaceTextInNodePreservingMarkers(PassRefPtrWillBeRa
     copyMarkers(markerController.markersInRange(Range::create(document(), node.get(), offset, node.get(), offset + count).get(), DocumentMarker::AllMarkers()), markers);
     replaceTextInNode(node, offset, count, replacementText);
     RefPtrWillBeRawPtr<Range> newRange = Range::create(document(), node.get(), offset, node.get(), offset + replacementText.length());
-    for (size_t i = 0; i < markers.size(); ++i)
+    for (std::size_t i = 0; i < markers.size(); ++i)
         markerController.addMarker(newRange.get(), markers[i].type(), markers[i].description());
 }
 
@@ -725,7 +723,7 @@ void CompositeEditCommand::deleteInsignificantText(PassRefPtrWillBeRawPtr<Text>
         return;
 
     Vector<InlineTextBox*> sortedTextBoxes;
-    size_t sortedTextBoxesPosition = 0;
+    std::size_t sortedTextBoxesPosition = 0;
 
     for (InlineTextBox* textBox = textRenderer->firstTextBox(); textBox; textBox = textBox->nextTextBox())
         sortedTextBoxes.append(textBox);
@@ -762,7 +760,7 @@ void CompositeEditCommand::deleteInsignificantText(PassRefPtrWillBeRawPtr<Text>
         bool indicesIntersect = start <= gapEnd && end >= gapStart;
         int gapLen = gapEnd - gapStart;
         if (indicesIntersect && gapLen > 0) {
-            gapStart = max(gapStart, start);
+            gapStart = std::max(gapStart, start);
             if (str.isNull())
                 str = textNode->data().substring(start, end - start);
             // remove text in the gap
@@ -809,7 +807,7 @@ void CompositeEditCommand::deleteInsignificantText(const Position& start, const
             break;
     }
 
-    for (size_t i = 0; i < nodes.size(); ++i) {
+    for (std::size_t i = 0; i < nodes.size(); ++i) {
         Text* textNode = nodes[i].get();
         int startOffset = textNode == start.deprecatedNode() ? start.deprecatedEditingOffset() : 0;
         int endOffset = textNode == end.deprecatedNode() ? end.deprecatedEditingOffset() : static_cast<int>(textNode->length());
@@ -1006,7 +1004,7 @@ void CompositeEditCommand::cloneParagraphUnderNewElement(const Position& start,
 
         // Clone every node between start.deprecatedNode() and outerBlock.
 
-        for (size_t i = ancestors.size(); i != 0; --i) {
+        for (std::size_t i = ancestors.size(); i != 0; --i) {
             Node* item = ancestors[i - 1].get();
             RefPtrWillBeRawPtr<Node> child = item->cloneNode(isRenderedTableElement(item));
             appendNode(child, toElement(lastNode));