Move Partition Allocator into Chromium base.

third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp

Index: third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
index 99960457fab9516a4f3fd35e6e7ae1bfb5d8c62b..27edc0f70b8eda339657297cd4e7f313b15bd12a 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
@@ -31,6 +31,7 @@
 #include "platform/image-decoders/png/PNGImageDecoder.h"
 #include "platform/image-decoders/webp/WEBPImageDecoder.h"
 #include "wtf/PtrUtil.h"
+#include "wtf/SpinLock.h"
 #include <memory>
 
 namespace blink {
@@ -512,7 +513,7 @@ size_t ImagePlanes::rowBytes(int i) const {
 namespace {
 
 // The output device color space is global and shared across multiple threads.
-SpinLock gTargetColorSpaceLock;
+WTF::SpinLock gTargetColorSpaceLock;
 SkColorSpace* gTargetColorSpace = nullptr;
 
 }  // namespace
@@ -524,7 +525,7 @@ void ImageDecoder::setGlobalTargetColorProfile(const WebVector<char>& profile) {
 
   // Take a lock around initializing and accessing the global device color
   // profile.
-  SpinLock::Guard guard(gTargetColorSpaceLock);
+  WTF::SpinLock::Guard guard(gTargetColorSpaceLock);
 
   // Layout tests expect that only the first call will take effect.
   if (gTargetColorSpace)
@@ -541,7 +542,7 @@ void ImageDecoder::setGlobalTargetColorProfile(const WebVector<char>& profile) {
 sk_sp<SkColorSpace> ImageDecoder::globalTargetColorSpace() {
   // Take a lock around initializing and accessing the global device color
   // profile.
-  SpinLock::Guard guard(gTargetColorSpaceLock);
+  WTF::SpinLock::Guard guard(gTargetColorSpaceLock);
 
   // Initialize the output device profile to sRGB if it has not yet been
   // initialized.