base: Use stl utilities from the base namespace

The utilities in base/stl_util.h have been moved from the global
into the base namespace. This patch updates the call sites accordingly.

BUG=636301

Review-Url: https://codereview.chromium.org/2234773002
Cr-Commit-Position: refs/heads/master@{#411739}

base/debug/activity_analyzer.cc

@@ -119,7 +119,7 @@ void GlobalActivityAnalyzer::PrepareAllAnalyzers() {
 
     // Add this analyzer to the map of known ones, indexed by a unique thread
     // identifier.
-    DCHECK(!ContainsKey(analyzers_, analyzer->GetThreadKey()));
+    DCHECK(!base::ContainsKey(analyzers_, analyzer->GetThreadKey()));
     analyzer->allocator_reference_ = ref;
     analyzers_[analyzer->GetThreadKey()] = std::move(analyzer);
   }

base/ios/crb_protocol_observers.mm

@@ -104,7 +104,7 @@ - (void)addObserver:(id)observer {
   DCHECK(observer);
   DCHECK([observer conformsToProtocol:self.protocol]);
 
-  if (ContainsValue(_observers, observer))
+  if (base::ContainsValue(_observers, observer))
     return;
 
   _observers.push_back(observer);

base/memory/scoped_vector.h

@@ -89,7 +89,7 @@ class ScopedVector {
   // Resize, deleting elements in the disappearing range if we are shrinking.
   void resize(size_t new_size) {
     if (v_.size() > new_size)
-      STLDeleteContainerPointers(v_.begin() + new_size, v_.end());
+      base::STLDeleteContainerPointers(v_.begin() + new_size, v_.end());
     v_.resize(new_size);
   }
 
@@ -98,7 +98,7 @@ class ScopedVector {
     v_.assign(begin, end);
   }
 
-  void clear() { STLDeleteElements(&v_); }
+  void clear() { base::STLDeleteElements(&v_); }
 
   // Like |clear()|, but doesn't delete any elements.
   void weak_clear() { v_.clear(); }
@@ -124,7 +124,7 @@ class ScopedVector {
   }
 
   iterator erase(iterator first, iterator last) {
-    STLDeleteContainerPointers(first, last);
+    base::STLDeleteContainerPointers(first, last);
     return v_.erase(first, last);
   }
 

base/scoped_observer.h

@@ -47,7 +47,7 @@ class ScopedObserver {
   }
 
   bool IsObserving(Source* source) const {
-    return ContainsValue(sources_, source);
+    return base::ContainsValue(sources_, source);
   }
 
   bool IsObservingSources() const { return !sources_.empty(); }